@Override
  public void visitMethodReferenceExpression(@NotNull PsiMethodReferenceExpression expression) {
    final PsiElement qualifier = expression.getQualifier();
    if (qualifier != null) {
      qualifier.accept(this);
    }
    myBuf.append("::");
    myBuf.append(expression.getReferenceName());
  }
@Override
  public void visitMethodReferenceExpression(@NotNull PsiMethodReferenceExpression expression)