code: protected void makeAnnotationTypeElementDoc(MethodSymbol meth, TreePath treePath) {
          AnnotationTypeElementDocImpl result =
              (AnnotationTypeElementDocImpl)methodMap.get(meth);
          if (result != null) {
              if (treePath != null) result.setTreePath(treePath);
          } else {
              result =
                  new AnnotationTypeElementDocImpl(this, meth, treePath);
              methodMap.put(meth, result);
          }
      }
docs: Create the AnnotationTypeElementDoc for a MethodSymbol.
  Should be called only on symbols representing annotation type elements.