code: public ServiceFuture<DatabaseAccountInner> beginCreateOrUpdateAsync(String resourceGroupName, String accountName, DatabaseAccountCreateUpdateParameters createUpdateParameters, final ServiceCallback<DatabaseAccountInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginCreateOrUpdateWithServiceResponseAsync(resourceGroupName, accountName, createUpdateParameters), serviceCallback);
      }
docs: Creates or updates an Azure Cosmos DB database account.
  
  @param resourceGroupName Name of an Azure resource group.
  @param accountName Cosmos DB database account name.
  @param createUpdateParameters The parameters to provide for the current database account.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object