A specification of a set of documents to listen to.

Attributes

• documents (DocumentsTarget): A target specified by a set of document names. Defaults to: null.
• once (boolean()): If the target should be removed once it is current and consistent. Defaults to: null.
• query (QueryTarget): A target specified by a query. Defaults to: null.
• readTime (String.t): Start listening after a specific `read_time`. The client must know the state of matching documents at this time. Defaults to: null.
• resumeToken (binary()): A resume token from a prior TargetChange for an identical target. Using a resume token with a different target is unsupported and may fail. Defaults to: null.
• targetId (integer()): A client provided target ID. If not set, the server will assign an ID for the target. Used for resuming a target without changing IDs. The IDs can either be client-assigned or be server-assigned in a previous stream. All targets with client provided IDs must be added before adding a target that needs a server-assigned id. Defaults to: null.