@Override
    public Class<TestPrimitiveB> getPrimitiveClass() {
      return TestPrimitiveB.class;
    }
Tests that key parsing via the serialization registry works as expected.

<p>NOTE: This adds a parser to the MutableSerializationRegistry, which no other test uses.
java_src/src/test/java/com/google/crypto/tink/KeysetHandleTest.java