spring-cloud-contract/spring-cloud-contract-stub-runner/src/test/resources/application-streamconsumer.yml

spring.cloud.function.definition: output
spring.cloud.stream.bindings.output-in-0.destination: output
spring.cloud.stream.bindings.output-in-0.contentType: application/json
spring.cloud.stream.bindings.output-out-0.destination: output
spring.cloud.stream.bindings.output-out-0.contentType: application/json