anchor.diff:  [[features-messaging-stub-runner-kafka-scenario1]]
   ===== Scenario 1 (No Input Message)
   
  -To trigger a message from the `return_book_1` label, we use the `StubTigger` interface, as follows:
  +To trigger a message from the `return_book_1` label, we use the `StubTrigger` interface, as follows:
   
   ====
   [source,groovy]
  
positive.code: [[features-messaging-stub-runner-integration-scenario1]]
  ===== Scenario 1 (No Input Message)
  
  To trigger a message from the `return_book_1` label, use the `StubTigger` interface, as
  follows:
  
  ====
  
negative.code: ----
  include::{tests_path}/spring-cloud-contract-stub-runner-kafka/src/test/groovy/org/springframework/cloud/contract/stubrunner/messaging/kafka/KafkaStubRunnerSpec.groovy[tags=trigger_no_output,indent=0]
  ----
  ====
  