addObserver method

void addObserver(
  1. String path,
  2. Future<Map<String, dynamic>?> callback(
    1. Map<String, dynamic>?
    )
)

Implementation

void addObserver(String path,
    Future<Map<String, dynamic>?> Function(Map<String, dynamic>?) callback) {
  throw UnimplementedError('platformVersion() has not been implemented.');
}