code: public void marshall(MongoDbSettings mongoDbSettings, ProtocolMarshaller protocolMarshaller) {
  
          if (mongoDbSettings == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(mongoDbSettings.getUsername(), USERNAME_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getPassword(), PASSWORD_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getServerName(), SERVERNAME_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getPort(), PORT_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getDatabaseName(), DATABASENAME_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getAuthType(), AUTHTYPE_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getAuthMechanism(), AUTHMECHANISM_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getNestingLevel(), NESTINGLEVEL_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getExtractDocId(), EXTRACTDOCID_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getDocsToInvestigate(), DOCSTOINVESTIGATE_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getAuthSource(), AUTHSOURCE_BINDING);
              protocolMarshaller.marshall(mongoDbSettings.getKmsKeyId(), KMSKEYID_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.