code: public function parse(
          $argv = null,
          ParameterCluster $parameterCluster = null
      ) {
          $this->initialize($argv, $parameterCluster);
  
          return $this->checkValidityAndContinueParse();
      }
docs: Parse the arguments.
  
  @param array            $argv
  @param ParameterCluster $parameterCluster
  
  @return array