getPaint method
Gets a paint from the collection.
Returns the main paint if no paintId
is provided.
Implementation
Paint getPaint([T? paintId]) {
if (paintId == null) {
return paint;
}
_assertGenerics();
final _paint = _paints[paintId];
if (_paint == null) {
throw ArgumentError('No Paint found for $paintId');
}
return _paint;
}