contract interface Remote =
  entrypoint dummy : () => unit

contract Events =

  // Valid index types
  type ix1 = int
  type ix2 = bool
  type ix3 = bits
  type ix4 = bytes(12)
  type ix5 = hash // bytes(32)
  type ix6 = address
  type ix7 = Remote

  // Valid payload types
  type data1 = string
  type data2 = signature  // bytes(64)
  type data3 = bytes(65)

  datatype event
    = Nodata0
    | Nodata1(ix1)
    | Nodata2(ix2, ix3)
    | Nodata3(ix4, ix5, ix6)
    | Data0(data1)
    | Data1(data2, ix7)
    | Data3(ix1, ix2, ix5, data1)

  entrypoint nodata0()                   = Chain.event(Nodata0)
  entrypoint nodata1(ix1)                = Chain.event(Nodata1(ix1))
  entrypoint nodata2(ix2, ix3)           = Chain.event(Nodata2(ix2, ix3))
  entrypoint nodata3(ix4, ix5, ix6)      = Chain.event(Nodata3(ix4, ix5, ix6))
  entrypoint data0(data1)                = Chain.event(Data0(data1))
  entrypoint data1(data2, ix7)           = Chain.event(Data1(data2, ix7))
  entrypoint data3(ix1, ix2, ix5, data1) = Chain.event(Data3(ix1, ix2, ix5, data1))