Matches on the google.adk.workflow.workflow brand rather than instanceof
so it stays correct across package copies — two copies of adk-js in one
runtime would fail an instanceof check between them. Named rather than
{@link}ed because the brand itself is internal, and this guard is public.
Type guard for Workflow.
Matches on the
google.adk.workflow.workflowbrand rather thaninstanceofso it stays correct across package copies — two copies of adk-js in one runtime would fail aninstanceofcheck between them. Named rather than{@link}ed because the brand itself is internal, and this guard is public.