toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
@override
String toString() {
final parts = <String>[];
if (ctrl == true) parts.add('Ctrl');
if (alt == true) parts.add('Alt');
if (shift == true) parts.add('Shift');
parts.add(key.name);
return 'ShortcutActivator(${parts.join('+')})';
}