Sets the auto-acknowledgement.
When enabled (default), the messages are automatically acknowledged. If set to {@code false}, the messages must
be acknowledged explicitly using {@link AmqpMessage#accepted()}, {@link AmqpMessage#released()} and
{@link AmqpMessage#rejected()}.
@param auto whether or not the auto-acknowledgement should be enabled.
@return the current {@link AmqpReceiverOptions} instance.
Sets the auto-acknowledgement. When enabled (default), the messages are automatically acknowledged. If set to {@code false}, the messages must be acknowledged explicitly using {@link AmqpMessage#accepted()}, {@link AmqpMessage#released()} and {@link AmqpMessage#rejected()}.
@param auto whether or not the auto-acknowledgement should be enabled. @return the current {@link AmqpReceiverOptions} instance.