void function ( boolean arg0 ) { this . retain = arg0 ; }
set whether the last will should be retained by the broker . concode_field_sep int qos concode_elem_sep byte[] payload concode_elem_sep String topic concode_elem_sep boolean retain concode_field_sep byte[] getPayload concode_elem_sep void setQos concode_elem_sep boolean isRetain concode_elem_sep void setPayload concode_elem_sep int getQos concode_elem_sep String toString concode_elem_sep MqttWillAndTestament fromString concode_elem_sep String getTopic concode_elem_sep void setTopic