@CanIgnoreReturnValue
    public Builder setTypeHeader(String value) {
      typeHeader = Optional.of(value);
      return this;
    }
Sets the Type Header Parameter.

<p>When set, this value should be set to a shortended IANA MediaType, see
https://tools.ietf.org/html/rfc7519#section-5.1 and
https://tools.ietf.org/html/rfc8725#section-3.11
java_src/src/main/java/com/google/crypto/tink/jwt/RawJwt.java