This API is subject to change. Bug fixes and new features will be released based on developer feedback throughout the preview period.
Retrieves an extended field.
The getExtendedField() function returns a Promise that resolves when the extended field is retrieved.
You can only call this method when authenticated as a Wix app or Wix user identity.
Extended field key.
When accessing contact data,
extended field values are available at fields[key].
For example, if the key is "custom.notes",
the value can be accessed at fields["custom.notes"].
Once set, key cannot be modified, even if displayName changes.