`hydrated_operator = yield Get(HydratedOperator, Q...
# development
a
hydrated_operator = yield Get(HydratedOperator, QueryParseResult, expr)
, then
Copy code
operands = yield Get(WrappedOperands, GetOperandsRequest(
      op=hydrated_operator.operator,
      build_file_addresses=build_file_addresses,
    ))