acknowledgeQos1Message method Null safety

bool? acknowledgeQos1Message(
  1. MqttPublishMessage message
)

Manually acknowledge a received QOS 1 message. Has no effect if manuallyAcknowledgeQos1 is not in force or the message is not awaiting a QOS 1 acknowledge. Returns true if an acknowledgement is sent to the broker.

Implementation

bool? acknowledgeQos1Message(MqttPublishMessage message) =>
    publishingManager?.acknowledgeQos1Message(message);