[FunctionName(“DurableFunctions”)]
public static async Task<List<string>> RunOrchestrator(
[OrchestrationTrigger] DurableOrchestrationContextBase context)
{
  var outputs = new List<string>();
  // Replace “hello” with the name of your Durable Activity Function.
  outputs.Add(await context.CallActivityAsync<string>(“DurableFunctions_Hello”, “Tokyo”));
  outputs.Add(await context.CallActivityAsync<string>(“DurableFunctions_Hello”, “Seattle”));
  outputs.Add(await context.CallActivityAsync<string>(“DurableFunctions_Hello”, “London”));
  // returns [“Hello Tokyo!”, “Hello Seattle!”, “Hello London!”]
  return outputs;
}