code: public ServiceFuture<DataMaskingRuleInner> createOrUpdateAsync(String resourceGroupName, String serverName, String databaseName, String dataMaskingRuleName, DataMaskingRuleInner parameters, final ServiceCallback<DataMaskingRuleInner> serviceCallback) {
          return ServiceFuture.fromResponse(createOrUpdateWithServiceResponseAsync(resourceGroupName, serverName, databaseName, dataMaskingRuleName, parameters), serviceCallback);
      }
docs: Creates or updates a database data masking rule.
  
  @param resourceGroupName The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
  @param serverName The name of the server.
  @param databaseName The name of the database.
  @param dataMaskingRuleName The name of the data masking rule.
  @param parameters The required parameters for creating or updating a data masking rule.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object