WI-17281 Allow to provide help by project generators

platform/platform-impl/src/com/intellij/platform/WebProjectGenerator.java

@@ -46,6 +46,11 @@ public abstract class WebProjectGenerator<T> implements DirectoryProjectGenerato
 
   public abstract String getDescription();
 
+  @Nullable
+  public String getHelpId() {
+    return null;
+  }
+
   @Override
   @NotNull
   public final T showGenerationSettings(VirtualFile baseDir) throws ProcessCanceledException {
@@ -124,6 +129,12 @@ public abstract class WebProjectGenerator<T> implements DirectoryProjectGenerato
       init();
     }
 
+    @Nullable
+    @Override
+    protected String getHelpId() {
+      return WebProjectGenerator.this.getHelpId();
+    }
+
     @Override
     protected boolean postponeValidation() {
       return false;