A selection of a collection, such as `messages as m1`.

Attributes

• allDescendants (boolean()): When false, selects only collections that are immediate children of the `parent` specified in the containing `RunQueryRequest`. When true, selects all descendant collections. Defaults to: null.
• collectionId (String.t): The collection ID. When set, selects only collections with this ID. Defaults to: null.