code/libraries/joomlatools/library/dispatcher/request/abstract.php
public function getETags()
    {
        $result = array();
        if($this->_headers->has('If-None-Match'))
        {
            $result = preg_split('/\s*,\s*/', $this->_headers->get('If-None-Match'), null, PREG_SPLIT_NO_EMPTY);

            //Remove the encoding from the etag
            //
            //RFC-7232 explicitly states that ETags should be content-coding aware
            $result = str_replace('-gzip', '', $result);
        }

        return $result;
    }
public function getETags()
    {
        $result = array();
        if($this->_headers->has('If-None-Match'))
        {
            $result = preg_split('/\s*,\s*/', $this->_headers->get('If-None-Match'), null, PREG_SPLIT_NO_EMPTY);

            //Remove the encoding from the etag
            //
            //RFC-7232 explicitly states that ETags should be content-coding aware
            $result = str_replace('-gzip', '', $result);
        }

        return $result;
    }
public function getETags ( ) { $ result = array ( ) ; if ( $ this -> _headers -> has ( 'If-None-Match' ) ) { $ result = preg_split ( '/\s*,\s*/' , $ this -> _headers -> get ( 'If-None-Match' ) , null , PREG_SPLIT_NO_EMPTY ) ; //Remove the encoding from the etag // //RFC-7232 explicitly states that ETags should be content-coding aware $ result = str_replace ( '-gzip' , '' , $ result ) ; } return $ result ; }
Gets the etags

@link https://tools.ietf.org/html/rfc7232#page-14

@return array The entity tags
Gets the etags