original_string: public function has($key) {
          $key = $this->formatKey($key);
          return array_has($this->headers, $key);
      }
code: public function has($key) {
          $key = $this->formatKey($key);
          return array_has($this->headers, $key);
      }
code_tokens: public function has ( $ key ) { $ key = $ this -> formatKey ( $ key ) ; return array_has ( $ this -> headers , $ key ) ; }
docstring: Check if there are any headers.
  
  @param $key
  
  @return bool
docstring_tokens: Check if there are any headers .