return this.asyncId;
    }

    /**
     * Sets the asynchronous identifier for this message.
     *
     * @param asyncId
     *            the asyncId to set
     */
    public final void setAsyncId(final long asyncId) {
        this.asyncId = asyncId;
    }

    /**
     * Gets the credit count for this message.
     *
     * @return the credit
     */
    public final int getCredit() {