code: public void marshall(RdsHttpEndpointConfig rdsHttpEndpointConfig, ProtocolMarshaller protocolMarshaller) {
  
          if (rdsHttpEndpointConfig == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(rdsHttpEndpointConfig.getAwsRegion(), AWSREGION_BINDING);
              protocolMarshaller.marshall(rdsHttpEndpointConfig.getDbClusterIdentifier(), DBCLUSTERIDENTIFIER_BINDING);
              protocolMarshaller.marshall(rdsHttpEndpointConfig.getDatabaseName(), DATABASENAME_BINDING);
              protocolMarshaller.marshall(rdsHttpEndpointConfig.getSchema(), SCHEMA_BINDING);
              protocolMarshaller.marshall(rdsHttpEndpointConfig.getAwsSecretStoreArn(), AWSSECRETSTOREARN_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.