createClosure
open fun createClosure(functionName: String, flags: BuilderClosureFlags, object: <Error class: unknown class>? = null): <Error class: unknown class><<Error class: unknown class>?>
Creates a closure to invoke the function called @function_name.
This is using the create_closure() implementation of @builder's iface@Gtk.BuilderScope.
If no closure could be created, null will be returned and @error will be set.
Return
A new closure for invoking @function_name
Parameters
functionName
name of the function to look up
flags
closure creation flags
object
Object to create the closure with