diff --git a/platform/lang-api/src/com/intellij/testIntegration/TestFinder.java b/platform/lang-api/src/com/intellij/testIntegration/TestFinder.java
index d956d465398e..77cbf29998d9 100644
--- a/platform/lang-api/src/com/intellij/testIntegration/TestFinder.java
+++ b/platform/lang-api/src/com/intellij/testIntegration/TestFinder.java
@@ -29,8 +29,21 @@ public interface TestFinder {
   @Nullable
   PsiElement findSourceElement(@NotNull PsiElement from);
 
+  /**
+   * Finds tests for given class.
+   *
+   * @param element may by of any language but not related to a current test finder domain language
+   * @return founded tests for class
+   */
   @NotNull
   Collection<PsiElement> findTestsForClass(@NotNull PsiElement element);
+
+  /**
+   * Finds classes for given test.
+   *
+   * @param element may by of any language but not related to a current test finder domain language
+   * @return founded classes for test
+   */
   @NotNull
   Collection<PsiElement> findClassesForTest(@NotNull PsiElement element);