ServiceFeatureTable.QueryFeaturesAsync(QueryParameters q)如何指定只返回具体某些字段

ServiceFeatureTable.QueryFeaturesAsync(QueryParameters, QueryFeatureFields)后面参数可以指定

public enum QueryFeatureFields
{
//
// 摘要:
// Returns only the object id in the query result.
IdsOnly = 0,
//
// 摘要:
// Requests only the minimal set of fields in the query result.
Minimum = 1,
//
// 摘要:
// Requests all available fields to be returned in the query result.
LoadAll = 2
}
只有这三个类型，并不能指定具体字段。另外最小字段值是否可以设置？