diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/DataConstructors.java b/plugins/github/src/org/jetbrains/plugins/github/api/DataConstructor.java
similarity index 68%
rename from plugins/github/src/org/jetbrains/plugins/github/api/DataConstructors.java
rename to plugins/github/src/org/jetbrains/plugins/github/api/DataConstructor.java
index 8b46c365509a..d0005c12a858 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/DataConstructors.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/DataConstructor.java
@@ -25,27 +25,13 @@ import org.jetbrains.annotations.NotNull;
  * All fields of the raw type are nullable by the nature of GSon parser;
  * but some of them are required, so we want them to be @NotNull in the actual data class,
  * otherwise there is an error in JSon data received from the server
- * <p/>
+ *
  * So we create Data class assuming that all required fields actually notnull and
  * catch exception if they are not.
- * <p/>
- * There are few similar interfaces because same entity can be provided with
- * different levels of detailing. And we don't want to duplicate Raw classes to
- * support such cases.
  *
  * Probably, these interfaces shouldn't be used outside of GithubApiUtil.createDataFromRaw()
  */
-interface DataConstructor<T> {
+interface DataConstructor {
   @NotNull
-  T create() throws IllegalArgumentException, NullPointerException;
-}
-
-interface DataConstructorDetailed<T> {
-  @NotNull
-  T createDetailed() throws IllegalArgumentException, NullPointerException;
-}
-
-interface DataConstructorSimplified<T> {
-  @NotNull
-  T createSimplified() throws IllegalArgumentException, NullPointerException;
+  <T> T create(@NotNull Class<T> resultClass) throws IllegalArgumentException, NullPointerException, ClassCastException;
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubApiUtil.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubApiUtil.java
index 3aa17805186e..554216db2743 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubApiUtil.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubApiUtil.java
@@ -299,32 +299,10 @@ public class GithubApiUtil {
    * Github API
    */
 
-  static <Raw extends DataConstructor<Result>, Result> Result createDataFromRaw(@NotNull Raw rawObject,
-                                                                                       @NotNull Class<Result> result) throws JsonException {
-    try {
-      return rawObject.create();
-    }
-    catch (Exception e) {
-      throw new JsonException("Json parse error", e);
-    }
-  }
-
-  static <Raw extends DataConstructorDetailed<Result>, Result> Result createDataFromRaw(@NotNull Raw rawObject,
-                                                                                               @NotNull Class<Result> result)
+  static <Raw extends DataConstructor, Result> Result createDataFromRaw(@NotNull Raw rawObject, @NotNull Class<Result> resultClass)
     throws JsonException {
     try {
-      return rawObject.createDetailed();
-    }
-    catch (Exception e) {
-      throw new JsonException("Json parse error", e);
-    }
-  }
-
-  static <Raw extends DataConstructorSimplified<Result>, Result> Result createDataFromRaw(@NotNull Raw rawObject,
-                                                                                                 @NotNull Class<Result> result)
-    throws JsonException {
-    try {
-      return rawObject.createSimplified();
+      return rawObject.create(resultClass);
     }
     catch (Exception e) {
       throw new JsonException("Json parse error", e);
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubAuthorizationRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubAuthorizationRaw.java
index 80b8462c99bd..de042754ebe1 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubAuthorizationRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubAuthorizationRaw.java
@@ -23,8 +23,8 @@ import java.util.List;
 /**
  * @author Aleksey Pivovarov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubAuthorizationRaw implements DataConstructor<GithubAuthorization> {
+@SuppressWarnings("UnusedDeclaration")
+class GithubAuthorizationRaw implements DataConstructor {
   @Nullable public Long id;
   @Nullable public String url;
   @Nullable public String token;
@@ -32,9 +32,19 @@ class GithubAuthorizationRaw implements DataConstructor<GithubAuthorization> {
   @Nullable public String noteUrl;
   @Nullable public List<String> scopes;
 
-  @NotNull
-  @Override
-  public GithubAuthorization create() {
+  @SuppressWarnings("ConstantConditions")
+  public GithubAuthorization createAuthorization() {
     return new GithubAuthorization(token, scopes);
   }
+
+  @SuppressWarnings("unchecked")
+  @NotNull
+  @Override
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubAuthorization.class)) {
+      return (T)createAuthorization();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
+  }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubCommitRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubCommitRaw.java
index cff1b103a0f5..8486f80142b3 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubCommitRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubCommitRaw.java
@@ -25,9 +25,7 @@ import java.util.List;
 /**
  * @author Aleksey Pivovarov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubCommitRaw
-  implements DataConstructorSimplified<GithubCommitSha>, DataConstructor<GithubCommit>, DataConstructorDetailed<GithubCommitDetailed> {
+class GithubCommitRaw implements DataConstructor {
   @Nullable public String url;
   @Nullable public String sha;
 
@@ -41,73 +39,90 @@ class GithubCommitRaw
 
   @Nullable public List<GithubCommitRaw> parents;
 
-  public static class GitCommitRaw implements DataConstructor<GithubCommit.GitCommit> {
+  public static class GitCommitRaw {
     @Nullable public String url;
     @Nullable public String message;
 
     @Nullable public GitUserRaw author;
     @Nullable public GitUserRaw committer;
 
+    @SuppressWarnings("ConstantConditions")
     @NotNull
-    @Override
     public GithubCommit.GitCommit create() {
       return new GithubCommit.GitCommit(message, author.create(), committer.create());
     }
   }
 
-  public static class GitUserRaw implements DataConstructor<GithubCommit.GitUser> {
+  public static class GitUserRaw {
     @Nullable public String name;
     @Nullable public String email;
     @Nullable public Date date;
 
+    @SuppressWarnings("ConstantConditions")
     @NotNull
-    @Override
     public GithubCommit.GitUser create() {
       return new GithubCommit.GitUser(name, email, date);
     }
   }
 
-  public static class CommitStatsRaw implements DataConstructor<GithubCommitDetailed.CommitStats> {
+  public static class CommitStatsRaw {
     @Nullable public Integer additions;
     @Nullable public Integer deletions;
     @Nullable public Integer total;
 
+    @SuppressWarnings("ConstantConditions")
     @NotNull
-    @Override
     public GithubCommitDetailed.CommitStats create() {
       return new GithubCommitDetailed.CommitStats(additions, deletions, total);
     }
   }
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubCommitSha createSimplified() {
+  public GithubCommitSha createCommitSha() {
     return new GithubCommitSha(url, sha);
   }
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubCommit create() {
-    GithubUser author = this.author == null ? null : this.author.create();
-    GithubUser committer = this.committer == null ? null : this.committer.create();
+  public GithubCommit createCommit() {
+    GithubUser author = this.author == null ? null : this.author.createUser();
+    GithubUser committer = this.committer == null ? null : this.committer.createUser();
 
     List<GithubCommitSha> parents = new ArrayList<GithubCommitSha>();
     for (GithubCommitRaw raw : this.parents) {
-      parents.add(raw.create());
+      parents.add(raw.createCommitSha());
     }
     return new GithubCommit(url, sha, author, committer, parents, commit.create());
   }
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubCommitDetailed createDetailed() {
-    GithubCommit commit = create();
+  public GithubCommitDetailed createCommitDetailed() {
+    GithubCommit commit = createCommit();
     List<GithubFile> files = new ArrayList<GithubFile>();
     for (GithubFileRaw raw : this.files) {
-      files.add(raw.create());
+      files.add(raw.createFile());
     }
 
     return new GithubCommitDetailed(commit.getUrl(), commit.getSha(), commit.getAuthor(), commit.getCommitter(), commit.getParents(),
                                     commit.getCommit(), stats.create(), files);
   }
+
+  @SuppressWarnings("unchecked")
+  @NotNull
+  @Override
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubCommitSha.class)) {
+      return (T)createCommitSha();
+    }
+    if (resultClass.isAssignableFrom(GithubCommit.class)) {
+      return (T)createCommit();
+    }
+    if (resultClass.isAssignableFrom(GithubCommitDetailed.class)) {
+      return (T)createCommitDetailed();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
+  }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubFileRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubFileRaw.java
index 0e68b6b25a1b..52e351f7be64 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubFileRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubFileRaw.java
@@ -21,8 +21,8 @@ import org.jetbrains.annotations.Nullable;
 /**
  * @author Aleksey Pivovarov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-public class GithubFileRaw implements DataConstructor<GithubFile> {
+@SuppressWarnings("UnusedDeclaration")
+public class GithubFileRaw implements DataConstructor {
   @Nullable public String filename;
 
   @Nullable public Integer additions;
@@ -33,9 +33,20 @@ public class GithubFileRaw implements DataConstructor<GithubFile> {
   @Nullable public String blobUrl;
   @Nullable public String patch;
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubFile create() {
+  public GithubFile createFile() {
     return new GithubFile(filename, additions, deletions, changes, status, rawUrl, patch);
   }
+
+  @SuppressWarnings("unchecked")
+  @NotNull
+  @Override
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubFile.class)) {
+      return (T)createFile();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
+  }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubGistRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubGistRaw.java
index db22afe29ecc..9aae5cb84052 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubGistRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubGistRaw.java
@@ -27,8 +27,8 @@ import java.util.Map;
 /**
  * @author Aleksey Pivovarov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubGistRaw implements DataConstructor<GithubGist> {
+@SuppressWarnings("UnusedDeclaration")
+class GithubGistRaw implements DataConstructor {
   @Nullable public String id;
   @Nullable public String description;
 
@@ -46,7 +46,7 @@ class GithubGistRaw implements DataConstructor<GithubGist> {
 
   @Nullable public Date createdAt;
 
-  public static class GistFileRaw implements DataConstructor<GithubGist.GistFile> {
+  public static class GistFileRaw {
     @Nullable public Long size;
     @Nullable public String filename;
     @Nullable public String content;
@@ -56,17 +56,17 @@ class GithubGistRaw implements DataConstructor<GithubGist> {
     @Nullable public String type;
     @Nullable public String language;
 
+    @SuppressWarnings("ConstantConditions")
     @NotNull
-    @Override
     public GithubGist.GistFile create() {
       return new GithubGist.GistFile(filename, content, raw_url);
     }
   }
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubGist create() {
-    GithubUser user = this.user == null ? null : this.user.create();
+  public GithubGist createGist() {
+    GithubUser user = this.user == null ? null : this.user.createUser();
 
     List<GithubGist.GistFile> files = new ArrayList<GithubGist.GistFile>();
     for (Map.Entry<String, GistFileRaw> entry : this.files.entrySet()) {
@@ -75,4 +75,15 @@ class GithubGistRaw implements DataConstructor<GithubGist> {
 
     return new GithubGist(id, description, isPublic, htmlUrl, files, user);
   }
+
+  @SuppressWarnings("unchecked")
+  @NotNull
+  @Override
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubGist.class)) {
+      return (T)createGist();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
+  }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueCommentRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueCommentRaw.java
index ebb8f45119fa..9bef7d7d174f 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueCommentRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueCommentRaw.java
@@ -23,8 +23,8 @@ import java.util.Date;
 /**
  * @author Aleksey Pivovarov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubIssueCommentRaw implements DataConstructor<GithubIssueComment> {
+@SuppressWarnings("UnusedDeclaration")
+class GithubIssueCommentRaw implements DataConstructor {
   @Nullable public Long id;
 
   @Nullable public String url;
@@ -36,9 +36,20 @@ class GithubIssueCommentRaw implements DataConstructor<GithubIssueComment> {
 
   @Nullable public GithubUserRaw user;
 
+  @SuppressWarnings("ConstantConditions")
+  @NotNull
+  public GithubIssueComment createIssueComment() {
+    return new GithubIssueComment(id, htmlUrl, body, createdAt, updatedAt, user.createUser());
+  }
+
+  @SuppressWarnings("unchecked")
   @NotNull
   @Override
-  public GithubIssueComment create() {
-    return new GithubIssueComment(id, htmlUrl, body, createdAt, updatedAt, user.create());
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubIssueComment.class)) {
+      return (T)createIssueComment();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
   }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueRaw.java
index 74d2eddc6c1d..798b4aa3f06e 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubIssueRaw.java
@@ -23,8 +23,8 @@ import java.util.Date;
 /**
  * @author Aleksey Pivovarov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubIssueRaw implements DataConstructor<GithubIssue> {
+@SuppressWarnings("UnusedDeclaration")
+class GithubIssueRaw implements DataConstructor {
   @Nullable public String url;
   @Nullable public String htmlUrl;
   @Nullable public Long number;
@@ -39,10 +39,21 @@ class GithubIssueRaw implements DataConstructor<GithubIssue> {
   @Nullable public Date createdAt;
   @Nullable public Date updatedAt;
 
+  @SuppressWarnings("ConstantConditions")
+  @NotNull
+  public GithubIssue createIssue() {
+    GithubUser assignee = this.assignee == null ? null : this.assignee.createUser();
+    return new GithubIssue(htmlUrl, number, state, title, body, user.createUser(), assignee, closedAt, createdAt, updatedAt);
+  }
+
+  @SuppressWarnings("unchecked")
   @NotNull
   @Override
-  public GithubIssue create() {
-    GithubUser assignee = this.assignee == null ? null : this.assignee.create();
-    return new GithubIssue(htmlUrl, number, state, title, body, user.create(), assignee, closedAt, createdAt, updatedAt);
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubIssue.class)) {
+      return (T)createIssue();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
   }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubPullRequestRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubPullRequestRaw.java
index c7ac739e73d7..5f81f66ecd7b 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubPullRequestRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubPullRequestRaw.java
@@ -24,7 +24,7 @@ import java.util.Date;
  * @author Aleksey Pivovarov
  */
 @SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubPullRequestRaw implements DataConstructor<GithubPullRequest> {
+class GithubPullRequestRaw implements DataConstructor {
   @Nullable public Long number;
   @Nullable public String state;
   @Nullable public String title;
@@ -55,7 +55,7 @@ class GithubPullRequestRaw implements DataConstructor<GithubPullRequest> {
   @Nullable public LinkRaw head;
   @Nullable public LinkRaw base;
 
-  public static class LinkRaw implements DataConstructor<GithubPullRequest.Link> {
+  public static class LinkRaw {
     @Nullable public String label;
     @Nullable public String ref;
     @Nullable public String sha;
@@ -64,16 +64,25 @@ class GithubPullRequestRaw implements DataConstructor<GithubPullRequest> {
     @Nullable public GithubUserRaw user;
 
     @NotNull
-    @Override
     public GithubPullRequest.Link create() {
-      return new GithubPullRequest.Link(label, ref, sha, repo.create(), user.create());
+      return new GithubPullRequest.Link(label, ref, sha, repo.createRepo(), user.createUser());
     }
   }
 
   @NotNull
-  @Override
-  public GithubPullRequest create() {
+  public GithubPullRequest createPullRequest() {
     return new GithubPullRequest(number, state, title, body, htmlUrl, diffUrl, patchUrl, issueUrl, createdAt, updatedAt, closedAt, mergedAt,
-                                 user.create(), head.create(), base.create());
+                                 user.createUser(), head.create(), base.create());
+  }
+
+  @SuppressWarnings("unchecked")
+  @NotNull
+  @Override
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubPullRequest.class)) {
+      return (T)createPullRequest();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
   }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubRepoRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubRepoRaw.java
index ce2f56803823..d97fdfd6ff69 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubRepoRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubRepoRaw.java
@@ -24,8 +24,8 @@ import java.util.Date;
 /**
  * @author Aleksey Pivovarov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubRepoRaw implements DataConstructor<GithubRepo>, DataConstructorDetailed<GithubRepoDetailed> {
+@SuppressWarnings("UnusedDeclaration")
+class GithubRepoRaw implements DataConstructor {
   @Nullable public Long id;
   @Nullable public String name;
   @Nullable public String fullName;
@@ -72,16 +72,31 @@ class GithubRepoRaw implements DataConstructor<GithubRepo>, DataConstructorDetai
   @Nullable public Date createdAt;
   @Nullable public Date updatedAt;
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubRepo create() {
-    return new GithubRepo(name, fullName, description, isPrivate, isFork, htmlUrl, cloneUrl, defaultBranch, owner.create());
+  public GithubRepo createRepo() {
+    return new GithubRepo(name, fullName, description, isPrivate, isFork, htmlUrl, cloneUrl, defaultBranch, owner.createUser());
   }
 
+  @SuppressWarnings("ConstantConditions")
+  @NotNull
+  public GithubRepoDetailed createRepoDetailed() {
+    GithubRepo parent = this.parent == null ? null : this.parent.createRepo();
+    return new GithubRepoDetailed(name, fullName, description, isPrivate, isFork, htmlUrl, cloneUrl, defaultBranch, owner.createUser(),
+                                  parent);
+  }
+
+  @SuppressWarnings("unchecked")
   @NotNull
   @Override
-  public GithubRepoDetailed createDetailed() {
-    GithubRepo parent = this.parent == null ? null : this.parent.create();
-    return new GithubRepoDetailed(name, fullName, description, isPrivate, isFork, htmlUrl, cloneUrl, defaultBranch, owner.create(), parent);
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubRepo.class)) {
+      return (T)createRepo();
+    }
+    if (resultClass.isAssignableFrom(GithubRepoDetailed.class)) {
+      return (T)createRepoDetailed();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
   }
 }
diff --git a/plugins/github/src/org/jetbrains/plugins/github/api/GithubUserRaw.java b/plugins/github/src/org/jetbrains/plugins/github/api/GithubUserRaw.java
index bd273001c6db..1f97da40993f 100644
--- a/plugins/github/src/org/jetbrains/plugins/github/api/GithubUserRaw.java
+++ b/plugins/github/src/org/jetbrains/plugins/github/api/GithubUserRaw.java
@@ -25,8 +25,8 @@ import java.util.Date;
  *
  * @author Kirill Likhodedov
  */
-@SuppressWarnings({"UnusedDeclaration", "ConstantConditions"})
-class GithubUserRaw implements DataConstructor<GithubUser>, DataConstructorDetailed<GithubUserDetailed> {
+@SuppressWarnings("UnusedDeclaration")
+class GithubUserRaw implements DataConstructor {
 
   @Nullable public String login;
   @Nullable public Long id;
@@ -58,28 +58,42 @@ class GithubUserRaw implements DataConstructor<GithubUser>, DataConstructorDetai
 
   @Nullable public Date createdAt;
 
-  public static class UserPlanRaw implements DataConstructor<GithubUserDetailed.UserPlan> {
+  public static class UserPlanRaw {
     @Nullable public String name;
     @Nullable public Long space;
     @Nullable public Long collaborators;
     @Nullable public Long privateRepos;
 
+    @SuppressWarnings("ConstantConditions")
     @NotNull
-    @Override
     public GithubUserDetailed.UserPlan create() {
       return new GithubUserDetailed.UserPlan(name, privateRepos);
     }
   }
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubUser create() {
+  public GithubUser createUser() {
     return new GithubUser(login, htmlUrl, gravatarId);
   }
 
+  @SuppressWarnings("ConstantConditions")
   @NotNull
-  @Override
-  public GithubUserDetailed createDetailed() {
+  public GithubUserDetailed createUserDetailed() {
     return new GithubUserDetailed(login, htmlUrl, gravatarId, name, email, ownedPrivateRepos, type, plan.create());
   }
+
+  @SuppressWarnings("unchecked")
+  @NotNull
+  @Override
+  public <T> T create(@NotNull Class<T> resultClass) {
+    if (resultClass.isAssignableFrom(GithubUser.class)) {
+      return (T)createUser();
+    }
+    if (resultClass.isAssignableFrom(GithubUserDetailed.class)) {
+      return (T)createUserDetailed();
+    }
+
+    throw new ClassCastException(this.getClass().getName() + ": bad class type: " + resultClass.getName());
+  }
 }