original_string: public function argumentNames()
      {
          $out = [];
          foreach ($this->_args as $arg) {
              $out[] = $arg->name();
          }
  
          return $out;
      }
code: public function argumentNames()
      {
          $out = [];
          foreach ($this->_args as $arg) {
              $out[] = $arg->name();
          }
  
          return $out;
      }
code_tokens: public function argumentNames ( ) { $ out = [ ] ; foreach ( $ this -> _args as $ arg ) { $ out [ ] = $ arg -> name ( ) ; } return $ out ; }
docstring: Get the list of argument names.
  
  @return string[]
docstring_tokens: Get the list of argument names .