This API is provided as a preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.
Filter context identity is available for persisted filter contexts.
This property may be undefined in two circumstances:
a new, yet unsaved dashboard; the filter context is saved together with the dashboard and after the save the identity will be known and added
export of an existing, saved dashboard; during the export the dashboard receives a temporary filter context that represents values of filters at the time the export was initiated - which may be different from what is saved in the filter context itself. that temporary context is not persistent and lives only for that particular export operation.