protected function _is_root( $root ) {
		$this->root = $root;

		$is_root = (bool) $this->_root_locate_template();
		if ( ! $is_root ) {
			$this->root = '';
		}

		return $is_root;
	}
protected function _is_root( $root ) {
		$this->root = $root;

		$is_root = (bool) $this->_root_locate_template();
		if ( ! $is_root ) {
			$this->root = '';
		}

		return $is_root;
	}
protected function _is_root ( $ root ) { $ this -> root = $ root ; $ is_root = ( bool ) $ this -> _root_locate_template ( ) ; if ( ! $ is_root ) { $ this -> root = '' ; } return $ is_root ; }
Return true when the template exists in the root

@param string $root root directory of template parts
@return boolean
Return true when the template exists in the root