private void AddRequestSpecificInformation()

in sdk/src/Handlers/AwsSdk/Internal/XRayPipelineHandler.cs [468:536]
60 lines of code
17 McCabe index (conditional complexity)

        private void AddRequestSpecificInformation(string serviceName, string operation, AmazonWebServiceRequest request, IDictionary<string, object> aws)
        {
            if (serviceName == null)
            {
                throw new ArgumentNullException(nameof(serviceName));
            }

            if (operation == null)
            {
                throw new ArgumentNullException(nameof(operation));
            }

            if (request == null)
            {
                throw new ArgumentNullException(nameof(request));
            }

            if (aws == null)
            {
                throw new ArgumentNullException(nameof(aws));
            }

            if (AWSServiceHandlerManifest == null)
            {
                _logger.DebugFormat("AWSServiceHandlerManifest doesn't exist.");
                return;
            }

            if (!AWSServiceHandlerManifest.Services.TryGetValue(serviceName, out AWSServiceHandler serviceHandler))
            {
                _logger.DebugFormat("Service name doesn't exist in AWSServiceHandlerManifest: serviceName = {0}.", serviceName);
                return;
            }

            if (!serviceHandler.Operations.TryGetValue(operation, out AWSOperationHandler operationHandler))
            {
                _logger.DebugFormat("Operation doesn't exist in AwsServiceInfo: serviceName = {0}, operation = {1}.", serviceName, operation);
                return;
            }

            if (operationHandler.RequestParameters != null)
            {
                foreach (string parameter in operationHandler.RequestParameters)
                {
                    if (TryReadPropertyValue(request, parameter, out object propertyValue))
                    {
                        aws[parameter.FromCamelCaseToSnakeCase()] = propertyValue;
                    }
                }
            }

            if (operationHandler.RequestDescriptors != null)
            {
                foreach (KeyValuePair<string, AWSOperationRequestDescriptor> kv in operationHandler.RequestDescriptors)
                {
                    var propertyName = kv.Key;
                    var descriptor = kv.Value;

                    if (descriptor.Map && descriptor.GetKeys)
                    {
                        AddMapKeyProperty(aws, request, propertyName, descriptor.RenameTo);
                    }
                    else if (descriptor.List && descriptor.GetCount)
                    {
                        AddListLengthProperty(aws, request, propertyName, descriptor.RenameTo);
                    }
                }
            }
        }