code: public ServiceFuture<BuildStepInner> beginCreateAsync(String resourceGroupName, String registryName, String buildTaskName, String stepName, final ServiceCallback<BuildStepInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginCreateWithServiceResponseAsync(resourceGroupName, registryName, buildTaskName, stepName), serviceCallback);
      }
docs: Creates a build step for a build task.
  
  @param resourceGroupName The name of the resource group to which the container registry belongs.
  @param registryName The name of the container registry.
  @param buildTaskName The name of the container registry build task.
  @param stepName The name of a build step for a container registry build task.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object