SharedWorker.php
public function removeUnreceivedMessage($index)
    {
        if ($index < 0 || $index >= count($this->unreceivedMessages)) {
            throw new Exception\OutOfRangeException('The "un-received" message index must be between 0 (inclusive) and the length of the queue (exclusive)');
        }
        array_splice($this->unreceivedMessages, $index, 1);

        return $this;
    }
public function removeUnreceivedMessage($index)
    {
        if ($index < 0 || $index >= count($this->unreceivedMessages)) {
            throw new Exception\OutOfRangeException('The "un-received" message index must be between 0 (inclusive) and the length of the queue (exclusive)');
        }
        array_splice($this->unreceivedMessages, $index, 1);

        return $this;
    }
@param int $index

@throws Exception\OutOfRangeException

@return $this