static PsiElement @NotNull [] getSelfAndImplementations(Editor editor,
                                                          @NotNull PsiElement element,
                                                          @NotNull ImplementationSearcher handler) {
    return getSelfAndImplementations(editor, element, handler, !(element instanceof PomTargetPsiElement));
  }
static PsiElement @NotNull [] getSelfAndImplementations(Editor editor,
                                                          @NotNull PsiElement element,
                                                          @NotNull ImplementationSearcher handler)