getHeaderOrNull
inline fun <T> JwtHeader.getHeaderOrNull(name: String, jsonInstance: Json = Jwt.defaultJsonParser): T?(source)
Returns the value of the named header deserialized to type T, or null if the header is absent.
Return
the header value deserialized as T, or null if absent.
Parameters
name
the name of the header to retrieve.
jsonInstance
the Json instance to use for deserialization; defaults to the library's Jwt.defaultJsonParser configuration (ignoreUnknownKeys = true, explicitNulls = false)