grantBoost method
Implementation
@override
Future<void> grantBoost(String boostTag,
{TRGrantBoostResponseListener? listener}) async {
final callId = _newCallId();
if (listener != null) _grantBoostCallbacks[callId] = listener;
await methodChannel.invokeMethod<void>('grantBoost', {
'callId': callId,
'boostTag': boostTag,
'hasListener': listener != null,
});
}