pub trait AnySystemParamFunction:
Send
+ Sync
+ 'static {
// Required methods
fn clone_any(&self) -> Box<dyn AnySystemParamFunction>;
fn system_set_any(&self) -> Interned<dyn SystemSet>;
fn init(&self, app: &mut App);
fn add_any(&self, app: &mut App, after: Vec<Interned<dyn SystemSet>>);
}