Function isFunction

isFunction(item: any): item is URFunction
Legacy function symbol guard.

MIGRATION NOTE: Refactor to the dedicated FunctionDeclaration, FunctionReference, and FunctionDescription interfaces. There is no single guard that covers all cases.
Parameters
- item: any
Returns item is URFunction
Deprecated
Remove usage; adopt new function interfaces and their specific guards where needed.
- Defined in node_modules/@universal-robots/contribution-api/lib/types/nodes/ur-symbol.d.ts:157