Explain the principles of lazy loading mechanism and its role in process optimization.

Lazy loading is a mechanism where an object or resource is created or loaded only at the moment of first access to it, rather than during application initialization.

In Flutter, this helps optimize performance and reduce memory consumption, especially when working with large data or complex widgets.

Example:

class LazyData {
  String? _data;

  String get data {
    if (_data == null) {
      _data = _loadData(); // loading occurs only on the first call
    }
    return _data!;
  }

  String _loadData() {
    // simulate a long load
    return "Data loaded";
  }
}

Thus, the lazy approach allows saving resources and speeding up app startup by loading heavy objects only when necessary.