This is used as part of update operations for documents. It provides access to updating a document through
a subscript-based API. A subscript operation returns a
DittoMutableDocumentPath that you can then use to
chain further subscript operations to in order to access nested values in a document. Once you’ve defined
the path to a key in a document that you’d like to update, by using subscripts, then you can use the
functionality defined on
DittoMutableDocumentPath to perform the desired document update(s). Note that
objects of this type should only be used within the scope of the update closure that they are provided in.
The ID of the document.
The document’s inner value.
Used to specify a path to a key in the document that you can subscript further to access a nested key in the document or perform an update operation on it immediately.