setMockMessageHandler method
Implementation
@override
void setMockMessageHandler(String channel, MessageHandler? handler,
[Object? identity]) {
if (handler == null) {
_outboundHandlers.remove(channel);
_outboundHandlerIdentities.remove(channel);
} else {
identity ??= handler;
_outboundHandlers[channel] = handler;
_outboundHandlerIdentities[channel] = identity;
}
}