What type of annotation provides metadata about a Gosu element?

The correct choice is class annotation, as it serves the purpose of providing metadata about a specific Gosu element, which can include classes, interfaces, or enums. This type of annotation can be used to define properties or behaviors of a class that can be accessed at runtime, offering insights into the design and structure of the class itself.

Class annotations allow developers to add additional descriptive information to the class, such as custom configurations or specifications that guide how the class is processed or utilized within the Guidewire framework. This enhances the understanding of the class's role and how it interacts with other elements in the application. The metadata specified by class annotations can be invaluable for documentation, integration, and framework functionalities.

While method annotations and property annotations also provide metadata, they are scoped specifically to methods and properties respectively, whereas class annotations give a broader context at the class level, making them fundamental for understanding the overall structure of Gosu code. Test annotations, on the other hand, are more related to testing frameworks and do not serve the purpose of providing general metadata about Gosu elements in the same way that class annotations do.