default
Control property names excluded by DEFAULT for this element type. The base implementation excludes nothing. Output abstractions (Response, Counter) override this so their inherited lifecycle controls (initial value / count limits) are off unless re-enabled per instance via includeControls.
A subclass that wants its inherited lifecycle controls available by default can narrow the inherited set, e.g. super.defaultExcludedControlNames() - Counter::initialCounterLimit.name.
Return
the set of control property names suppressed by default for this element