docs: public void marshall(AdminInitiateAuthRequest adminInitiateAuthRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (adminInitiateAuthRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(adminInitiateAuthRequest.getUserPoolId(), USERPOOLID_BINDING);
              protocolMarshaller.marshall(adminInitiateAuthRequest.getClientId(), CLIENTID_BINDING);
              protocolMarshaller.marshall(adminInitiateAuthRequest.getAuthFlow(), AUTHFLOW_BINDING);
              protocolMarshaller.marshall(adminInitiateAuthRequest.getAuthParameters(), AUTHPARAMETERS_BINDING);
              protocolMarshaller.marshall(adminInitiateAuthRequest.getClientMetadata(), CLIENTMETADATA_BINDING);
              protocolMarshaller.marshall(adminInitiateAuthRequest.getAnalyticsMetadata(), ANALYTICSMETADATA_BINDING);
              protocolMarshaller.marshall(adminInitiateAuthRequest.getContextData(), CONTEXTDATA_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }