/**
* If specimen is null, returns null. Otherwise passes it to my wrapped Guard, if there is one.
*/
public Object coerce(Object specimen, OneArgFunc optEjector) {
// shorten first
specimen = Ref.resolution(specimen);
if (null == specimen) {
return null;
} else if (null == myOptSubGuard) {
throw Thrower.toEject(optEjector, "must be null");
} else {
return myOptSubGuard.coerce(specimen, optEjector);
}
}
