preview property
Preview is the secret MASKED — first and last characters kept, the middle starred — so a reviewer can recognise it without it being disclosed.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
String? preview;