operator []= method
Associates the key with the given value.
If the key was already in the map, its associated value is changed. Otherwise the key/value pair is added to the map.
Implementation
@override
void operator []=(K key, V value) {
if (_isReadOnly) {
throw UnsupportedError('Attempted to change a read-only map field');
}
if (_checkKey != null) {
_checkKey(key);
}
if (_checkValue != null) {
_checkValue(value);
}
_wrappedMap[key] = value;
}