Returns an independent builder with the same configuration.
Enables market orders against service and returns the ready builder.
defaultSlippageBps is the global worst-case slippage; pricingSource
selects the base price ("Mark" default or "BookTop"); overrides
is an array of SpotFundsOverride. Without this call the policy is
limit-only (market orders rejected UnsupportedOrderType).
Throws ParamError when defaultSlippageBps is out of range or
pricingSource is invalid.
Assigns the policy group id and returns the builder for chaining.
Ready-builder token for the builtin spot-funds policy.