synonyms property Null safety
Returns a set of pseudo-key synonyms for the given key.
This allows finding the pseudo-keys that also represents a concrete
key so that a class with a key map can match pseudo-keys as well as the
actual generated keys.
The pseudo-keys returned in the set are typically used to represent keys
which appear in multiple places on the keyboard, such as the shift,
alt, control, and meta keys. The keys in the returned set won't ever
be generated directly, but if a more specific key event is received, then
this set can be used to find the more general pseudo-key. For example, if
this is a shiftLeft key, this accessor will return the set
<LogicalKeyboardKey>{ shift }.
Implementation
Set<LogicalKeyboardKey> get synonyms {
final LogicalKeyboardKey? result = _synonyms[this];
return result == null ? <LogicalKeyboardKey>{} : <LogicalKeyboardKey>{result};
}