updateSamplingRule method
      
Future<UpdateSamplingRuleResult> 
updateSamplingRule({ 
    
- required SamplingRuleUpdate samplingRuleUpdate,
Modifies a sampling rule's configuration.
May throw InvalidRequestException. May throw ThrottledException.
Parameter samplingRuleUpdate :
The rule and fields to change.
Implementation
Future<UpdateSamplingRuleResult> updateSamplingRule({
  required SamplingRuleUpdate samplingRuleUpdate,
}) async {
  ArgumentError.checkNotNull(samplingRuleUpdate, 'samplingRuleUpdate');
  final $payload = <String, dynamic>{
    'SamplingRuleUpdate': samplingRuleUpdate,
  };
  final response = await _protocol.send(
    payload: $payload,
    method: 'POST',
    requestUri: '/UpdateSamplingRule',
    exceptionFnMap: _exceptionFns,
  );
  return UpdateSamplingRuleResult.fromJson(response);
}