[
  {"op": "doc", "text": "consumer that tries to gang two params of a spliced instance (documented as unsupported)"},
  {"op": "source", "role": "price", "kind": "F64"},
  {"op": "use", "ref": {"name": "spread_xover"}, "name": "xover"},
  {"op": "feed", "role": "price", "into": ["xover.price"]},
  {"op": "add", "type": "Bias", "name": "bias"},
  {"op": "connect", "from": "xover.spread", "to": "bias.signal"},
  {"op": "gang", "as": "xover_length", "into": ["xover.fast.length", "xover.slow.length"]},
  {"op": "expose", "from": "bias.bias", "as": "bias"}
]