addAll method Null safety

void addAll(
  1. String key,
  2. Iterable values
)

Atomically add values to the end of the array key.

Implementation

void addAll(String key, Iterable values) {
  if (isNullOrEmpty(key)) {
    throw ArgumentError.notNull('key');
  }
  _LCAddOperation op = new _LCAddOperation(values);
  _applyOperation(key, op);
}