Maps each group name that has at least one boundary hook to its merged JssmBoundaryHooks. Carried on JssmGenericConfig for the runtime to consume; depth-aware firing is a later task.
JssmHookDeclaration
Maps each group name that has at least one boundary hook to its merged JssmBoundaryHooks. Carried on JssmGenericConfig for the runtime to consume; depth-aware firing is a later task.