private function _addHeaderRequirements()
    {
        $this->_headerRequirements = array();
        foreach ($this->getRequirements() as $key => $value) {
            if (0 === strpos($key, 'HTTP-')) {
                $this->_headerRequirements[substr($key, 5)] = $value;
            }
        }

        return $this;
    }
private function _addHeaderRequirements()
    {
        $this->_headerRequirements = array();
        foreach ($this->getRequirements() as $key => $value) {
            if (0 === strpos($key, 'HTTP-')) {
                $this->_headerRequirements[substr($key, 5)] = $value;
            }
        }

        return $this;
    }
private function _addHeaderRequirements ( ) { $ this -> _headerRequirements = array ( ) ; foreach ( $ this -> getRequirements ( ) as $ key => $ value ) { if ( 0 === strpos ( $ key , 'HTTP-' ) ) { $ this -> _headerRequirements [ substr ( $ key , 5 ) ] = $ value ; } } return $ this ; }
Extract header requirements.

@return Route The current Route instance
Extract header requirements .