check-ios-bus/Utilities/platform/2/templates/section-generated-pipe-many

      ctrl.%PIPE%(
        dbg: "%SHORT_SRC%",
        sub: %SUB%,
        %SRC%.eraseToAnyPublisher(),
        {
          $0.%NAME% = $1
        },
        { m, _ in m.%NAME%.keys = [] }
      )