src/vs/platform/contextkey/common/contextkey.ts/ContextKeyExpr/_deserializeOrExpression
class ContextKeyExpr:	private static _deserializeOrExpression(serialized: string, strict: boolean): ContextKeyExpression | undefined {
		const pieces = serialized.split('||');
		return ContextKeyOrExpr.create(pieces.map(p => this._deserializeAndExpression(p, strict)), null, true);
	}