Indicates that the proprety will be used in conjunction with PollForJobs. When creating a custom action, an action can have up to one queryable property. If it has one, that property must be both required and not secret.
If you create a pipeline with a custom action type, and that custom action contains a queryable property, the value for that configuration property is subject to additional restrictions. The value must be less than or equal to twenty (20) characters. The value can contain only alphanumeric characters, underscores, and hyphens.