union method
From now on, also matches what other matches; returns this
pointcut.
Implementation
ComposablePointcut union(AopPointcut other) {
final current = _matches;
_matches = (s, name, aliases, introduced) =>
current(s, name, aliases, introduced) ||
pointcutMatchesBean(
other,
s,
name,
aliases,
introducedTypes: introduced,
);
return this;
}