code: private function isDeprecationErrorCall(Tokens $tokens, $index)
      {
          if ('trigger_error' !== strtolower($tokens[$index]->getContent())) {
              return false;
          }
  
          $endBraceIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $tokens->getNextTokenOfKind($index, [T_STRING, '(']));
  
          $prevIndex = $tokens->getPrevMeaningfulToken($endBraceIndex);
          if ($tokens[$prevIndex]->equals(',')) {
              $prevIndex = $tokens->getPrevMeaningfulToken($prevIndex);
          }
  
          return $tokens[$prevIndex]->equals([T_STRING, 'E_USER_DEPRECATED']);
      }
docs: @param Tokens $tokens
  @param int    $index
  
  @return bool