name: pipe_with_cycle
pipes:
  - name: a_source
    ty: Poller
    config:
      ty: PollerConfig
    output: Integer
  - name: mapper_a
    ty: Mapper
    upstreams: [ "mapper_c" ]
    config:
      ty: MapperConfig
    output: Integer
  - name: mapper_b
    ty: Mapper
    upstreams: [ "mapper_a" ]
    config:
      ty: MapperConfig
    output: Integer
  - name: mapper_c
    ty: Mapper
    upstreams: [ "mapper_b" ]
    config:
      ty: MapperConfig
    output: Integer