@CanIgnoreReturnValue
    public Builder setPrimeExponents(SecretBigInteger dP, SecretBigInteger dQ) {
      this.dP = Optional.of(dP);
      this.dQ = Optional.of(dQ);
      return this;
    }
Sets the prime exponents dP and dQ.

<p>See https://datatracker.ietf.org/doc/html/rfc7518#section-6.3.2.4.

<p>This is required.
java_src/src/main/java/com/google/crypto/tink/jwt/JwtRsaSsaPssPrivateKey.java