namespace JungleDB {
	public interface NodeOperation {
		Command getCommand();
		Either<Error,TreeNode> invoke (TreeNode _target);
		int getPosition();
		string getKey();
		byte[] getValue();
	}

	public interface NodeOperation<T> {
		Command getCommand();
		Either<Error,TreeNode> invoke (TreeNode _target);
		int getPosition();
		string getKey();
		MultiAttributes<T> getValue();
	}
}