containsSync method
Checks if this directory contains the entity.
The entity can be a File or a Directory.
If recursive is true, it checks the subdirectories too.
Returns a bool.
For the async method, see contains.
Implementation
bool containsSync(FileSystemEntity entity, {bool recursive = false}) {
final entities = listSync(recursive: recursive);
return entities.any(
(element) => FileSystemEntity.identicalSync(entity.path, element.path),
);
}