Represents the current state of a preview value along with a flag indicating whether
the preview data is still being fetched or is fully resolved.
The tuple contains a preview value or null, and a boolean indicating if the data is
pending. A true value means a fetch is ongoing; false indicates that the
currently provided preview value is up-to-date.
Represents the current state of a preview value along with a flag indicating whether the preview data is still being fetched or is fully resolved.
The tuple contains a preview value or null, and a boolean indicating if the data is pending. A
truevalue means a fetch is ongoing;falseindicates that the currently provided preview value is up-to-date.