How to use the @orbit/data.isUpdatable function in @orbit/data

protected _sourceInterfaces(source: Source): string[] {
    let interfaces = ['transformable'];
    if (isPullable(source)) {
      interfaces.push('pullable');
    }
    if (isPushable(source)) {
      interfaces.push('pushable');
    }
    if (isQueryable(source)) {
      interfaces.push('queryable');
    }
    if (isSyncable(source)) {
      interfaces.push('syncable');
    }
    if (isUpdatable(source)) {
      interfaces.push('updatable');
    }
    return interfaces;
  }