JsonDefaultValue

Annotation to be placed on enum an enum value or sealed class subclass to indicate that it is the default value if an unknown or missing entry is encountered.

Only one value can be annotated.

If no entry is annotated the adapter will throw an exception if an unknown value is encountered.

Example:

@JsonSerializable
enum class SomeEnum {
    @JsonProperty(name = "some-value")
    SOME_VALUE,
    @JsonProperty(name = "some-other-value")
    SOME_OTHER_VALUE,
    @JsonDefaultValue
    UNKNOWN
}