maxQuantity is keyed by underlying asset and maxNotional by settlement
asset. Either cap may be absent and then constrains nothing. A resolution
chain skips a matching barrier that omits its metric. Zero is a present cap
and rejects positive metric values while admitting a value of exactly zero.
Plain-object form of OrderSizeLimit.
maxQuantityis keyed by underlying asset andmaxNotionalby settlement asset. Either cap may be absent and then constrains nothing. A resolution chain skips a matching barrier that omits its metric. Zero is a present cap and rejects positive metric values while admitting a value of exactly zero.