Look up the available-action entry for a given action ID. Returns the
entry as emitted by the seller (so callers can read mode, sla,
terms_ref) or undefined if the action isn't currently available.
Honors rollup: when only a legacy coarse action is emitted by the seller
(valid_actions[] flat list or available_actions[] with coarse keys)
and the caller asks for a fine-grained child action, the lookup falls
through to the rollup parent. The returned entry carries the seller's
emitted action ID, not the caller's requested ID.
Look up the available-action entry for a given action ID. Returns the entry as emitted by the seller (so callers can read
mode,sla,terms_ref) orundefinedif the action isn't currently available.Honors rollup: when only a legacy coarse action is emitted by the seller (
valid_actions[]flat list oravailable_actions[]with coarse keys) and the caller asks for a fine-grained child action, the lookup falls through to the rollup parent. The returned entry carries the seller's emitted action ID, not the caller's requested ID.