expect..Root.exceptIf condition is false throw the result of invoking the callable object f with rest of arguments as f’s arguments.
Parameters: Basic condition, Callable f, any number of variables of any type
Return value: reference to condition
NativeCallable, Callable
except(false, Exception, "Message");
Exception at: ..Root.import
Exception at: ..Root.my_source_name
Exception at: ..Root.my_source_name.callOperator
Exception at: ..Root.except
Exception: Message