original_string: public function initHeaders()
      {
          if (!isset($this->headers)) {
              $this->headers = new HeadersObject($this->determineHeaders());
          }
          
          return $this->headers;
      }
code: public function initHeaders()
      {
          if (!isset($this->headers)) {
              $this->headers = new HeadersObject($this->determineHeaders());
          }
          
          return $this->headers;
      }
code_tokens: public function initHeaders ( ) { if ( ! isset ( $ this -> headers ) ) { $ this -> headers = new HeadersObject ( $ this -> determineHeaders ( ) ) ; } return $ this -> headers ; }
docstring: Public function to create header object
  
  @return HeadersInterface
docstring_tokens: Public function to create header object