code: private function isValidControl(Tokens $tokens, Token $docsToken, $controlIndex)
      {
          static $controlStructures = [
              T_FOR,
              T_FOREACH,
              T_IF,
              T_SWITCH,
              T_WHILE,
          ];
  
          if (!$tokens[$controlIndex]->isGivenKind($controlStructures)) {
              return false;
          }
  
          $index = $tokens->getNextMeaningfulToken($controlIndex);
          $endIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_PARENTHESIS_BRACE, $index);
          $docsContent = $docsToken->getContent();
  
          for ($index = $index + 1; $index < $endIndex; ++$index) {
              $token = $tokens[$index];
  
              if (
                  $token->isGivenKind(T_VARIABLE) &&
                  false !== strpos($docsContent, $token->getContent())
              ) {
                  return true;
              }
          }
  
          return false;
      }
docs: Checks control structures (for, foreach, if, switch, while) for correct docblock usage.
  
  @param Tokens $tokens
  @param Token  $docsToken    docs Token
  @param int    $controlIndex index of control structure Token
  
  @return bool