toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (alg != null) 'alg': alg!,
if (e != null) 'e': e!,
if (kid != null) 'kid': kid!,
if (kty != null) 'kty': kty!,
if (n != null) 'n': n!,
if (use != null) 'use': use!,
};