@Override
  @Nullable
  public Class<?> getInputPrimitiveClass(Class<?> wrapperClassObject) {
    return Registry.getInputPrimitive(wrapperClassObject);
  }
Represents the configuration as currently specified by the registry. That is, this configuration
is just a thin layer forwarding calls to the global {@link com.google.crypto.tink.Registry}.

<p>Because the global {@link com.google.crypto.tink.Registry} changes when user code adds to it,
using this class is not recommended.
java_src/src/main/java/com/google/crypto/tink/internal/RegistryConfiguration.java