[
  {"op": "source", "role": "price", "kind": "F64"},
  {"op": "add", "type": "SMA", "name": "fast", "bind": {"length": {"I64": 2}}},
  {"op": "add", "type": "SMA", "name": "slow", "bind": {"length": {"I64": 8}}},
  {"op": "feed", "role": "price", "into": ["fast.series", "slow.series"]},
  {"op": "add", "type": "Gt", "name": "above"},
  {"op": "connect", "from": "fast.value", "to": "above.a"},
  {"op": "connect", "from": "slow.value", "to": "above.b"},
  {"op": "add", "type": "Sub", "name": "spread"},
  {"op": "connect", "from": "fast.value", "to": "spread.lhs"},
  {"op": "connect", "from": "slow.value", "to": "spread.rhs"},
  {"op": "add", "type": "Sign", "name": "dir"},
  {"op": "connect", "from": "spread.value", "to": "dir.value"},
  {"op": "add", "type": "Const", "name": "one", "bind": {"value": {"F64": 1.0}}},
  {"op": "add", "type": "Const", "name": "negone", "bind": {"value": {"F64": -1.0}}},
  {"op": "feed", "role": "price", "into": ["one.clock", "negone.clock"]},
  {"op": "add", "type": "When", "name": "gated"},
  {"op": "connect", "from": "one.value", "to": "gated.value"},
  {"op": "connect", "from": "above.value", "to": "gated.gate"},
  {"op": "add", "type": "CumSum", "name": "count_above"},
  {"op": "connect", "from": "gated.value", "to": "count_above.series"},
  {"op": "add", "type": "CumSum", "name": "count_all"},
  {"op": "connect", "from": "one.value", "to": "count_all.series"},
  {"op": "add", "type": "Select", "name": "mux"},
  {"op": "connect", "from": "above.value", "to": "mux.cond"},
  {"op": "connect", "from": "one.value", "to": "mux.then"},
  {"op": "connect", "from": "negone.value", "to": "mux.otherwise"},
  {"op": "add", "type": "Bias", "name": "bias", "bind": {"scale": {"F64": 1.0}}},
  {"op": "connect", "from": "dir.value", "to": "bias.signal"},
  {"op": "expose", "from": "bias.bias", "as": "bias"}
]