onMessage method
Implementation
void onMessage(String message) {
var params = VoltronMap();
params.push<String>('data', message);
params.push<String>('type', "text");
_sendWebSocketEvent('onMessage', params);
}
void onMessage(String message) {
var params = VoltronMap();
params.push<String>('data', message);
params.push<String>('type', "text");
_sendWebSocketEvent('onMessage', params);
}