code: private function createMethodGenerator($methodName, $body, DocBlockGenerator $docBlock, $parameterInfoArray, $returnType = null) {
          $parameters = [];
          foreach ($parameterInfoArray as $parameterInfo) {
              $parameters[] = new ParameterGenerator($parameterInfo[0], $parameterInfo[1]);
          }
  
          $methodGenerator = new MethodGenerator($methodName);
          $methodGenerator->setParameters($parameters);
          
          if ($returnType != null) {
              if (is_array($returnType)) {
                  $returnType = implode('|', $returnType);
              }
              
              $tags[] = new GenericTag('return', $returnType);
              $docBlock->setTags($tags);
          }
          
          $methodGenerator->setDocBlock($docBlock);
          $methodGenerator->setBody($body);
          
          return $methodGenerator;
      }
docs: Helper method for generating trivial methods.
  @param $methodName
  @param $body
  @param $docBlock
  @param $parameterInfoArray
  @return MethodGenerator