aeron-client/src/main/java/io/aeron/protocol/StatusMessageFlyweight.java
public StatusMessageFlyweight applicationSpecificFeedback(final byte[] source, final int offset, final int length)
    {
        frameLength(HEADER_LENGTH + length);
        putBytes(APP_SPECIFIC_FEEDBACK_FIELD_OFFSET, source, offset, length);

        return this;
    }
public StatusMessageFlyweight applicationSpecificFeedback(final byte[] source, final int offset, final int length)
    {
        frameLength(HEADER_LENGTH + length);
        putBytes(APP_SPECIFIC_FEEDBACK_FIELD_OFFSET, source, offset, length);

        return this;
    }
Set the Application Specific Feedback for the Status Message.

@param source of the feedback to set
@param offset of the feedback in the source
@param length of the feedback in bytes
@return flyweight