public function getServerMessage()
    {
        if (isset($this->_details[self::ENTRY_MESSAGE])) {
            return $this->_details[self::ENTRY_MESSAGE];
        }

        return null;
    }
public function getServerMessage()
    {
        if (isset($this->_details[self::ENTRY_MESSAGE])) {
            return $this->_details[self::ENTRY_MESSAGE];
        }

        return null;
    }
public function getServerMessage ( ) { if ( isset ( $ this -> _details [ self :: ENTRY_MESSAGE ] ) ) { return $ this -> _details [ self :: ENTRY_MESSAGE ] ; } return null ; }
Get server error message

If the server has provided additional details about the error
that occurred, this will return the server error string

@return string - server error message
Get server error message