object_valid_instance_function typedef
Look in the table of objects of this type, and see if this is a valid
instance number.
@ingroup ObjHelpers
@param in The object instance number to be looked up.
@return True if the object instance refers to a valid object of this type.
Implementation
typedef object_valid_instance_function =
ffi.Pointer<ffi.NativeFunction<object_valid_instance_functionFunction>>;