original_string: public function getHttpHeaders()
      {
          $field = EnumRequestOption::HTTP_HEADERS;
          $http_deaders = isset($this->options[$field]) ? $this->options[$field] : [];
  
          $http_deaders = array_merge($this->getDefaultHttpHeaders(), $http_deaders);
  
          return $http_deaders;
      }
code: public function getHttpHeaders()
      {
          $field = EnumRequestOption::HTTP_HEADERS;
          $http_deaders = isset($this->options[$field]) ? $this->options[$field] : [];
  
          $http_deaders = array_merge($this->getDefaultHttpHeaders(), $http_deaders);
  
          return $http_deaders;
      }
code_tokens: public function getHttpHeaders ( ) { $ field = EnumRequestOption :: HTTP_HEADERS ; $ http_deaders = isset ( $ this -> options [ $ field ] ) ? $ this -> options [ $ field ] : [ ] ; $ http_deaders = array_merge ( $ this -> getDefaultHttpHeaders ( ) , $ http_deaders ) ; return $ http_deaders ; }
docstring: Get HTTP headers
  
  @return array
docstring_tokens: Get HTTP headers