Annotation that can be used to define name of root element used for the root-level object when serialized, which normally uses name of the type (class). It is similar to JAXB XmlRootElement and basically an alias for standard Jackson annotation com.fasterxml.jackson.annotation.JsonRootName (which you should usually use instead).

Note that annotation has no effect on non-root elements: regular property values and so on; their name is derived from getter/setter/field, not from type itself.