This API is subject to change. Bug fixes and new features will be released based on developer feedback throughout the preview period.
Updates a media item in a specified gallery.
Note: When creating or updating image items in a pro gallery, the images must be uploaded or imported to the Wix Media Manager first, as the imageInfo parameter currently only supports the Wix Media URL.
You can only call this method when authenticated as a Wix app or Wix user identity.