code: public BuildStepInner update(String resourceGroupName, String registryName, String buildTaskName, String stepName, BuildStepUpdateParameters buildStepUpdateParameters) {
          return updateWithServiceResponseAsync(resourceGroupName, registryName, buildTaskName, stepName, buildStepUpdateParameters).toBlocking().last().body();
      }
docs: Updates a build step in 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 buildStepUpdateParameters The parameters for updating a build step.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the BuildStepInner object if successful.