This enum represents the standardized claims that the MP-JWT specification allows for in terms of interoperability. For every claim in this enum, an MP-JWT implementation must return a value of the indicated type from JsonWebToken#getClaim(String) method. An implementation is free to include any additional claims, and users of JsonWebToken#getClaim(String) can expect that the JSON-P corresponding Java type is seen based on the JSON type of the claim. The set of included claims is defined by IANA, see https://www.iana.org/assignments/jwt/jwt.xhtml