PUBLIC: Add a note about getting the end position of a tree to ASTHelpers.getStartPosition(Tree).

PiperOrigin-RevId: 941070251

Author: kluever

check_api/src/main/java/com/google/errorprone/util/ASTHelpers.java

@@ -1941,7 +1941,10 @@ private static ImmutableList<Type> extractTypes(@Nullable Type type) {
     }
   }
 
-  /** Returns the start position of the node. */
+  /**
+   * Returns the start position of the node. To get the end position of a node, use {@link
+   * VisitorState#getEndPosition}.
+   */
   public static int getStartPosition(Tree tree) {
     return ((JCTree) tree).getStartPosition();
   }