Merge "Remove useless generic argument and unchecked cast" into main

    }

    @Nullable

    static <V> PolicyKey readPolicyKeyFromXml(TypedXmlPullParser parser)

    static PolicyKey readPolicyKeyFromXml(TypedXmlPullParser parser)

            throws XmlPullParserException, IOException {

        // TODO: can we avoid casting?

        PolicyKey policyKey = PolicyKey.readGenericPolicyKeyFromXml(parser);

        if (policyKey == null) {

            Slogf.wtf(TAG, "Error parsing PolicyKey, GenericPolicyKey is null");

            return null;

        }

        PolicyDefinition<PolicyValue<V>> genericPolicyDefinition =

                (PolicyDefinition<PolicyValue<V>>) POLICY_DEFINITIONS.get(

                        policyKey.getIdentifier());

        PolicyDefinition<?> genericPolicyDefinition =

                POLICY_DEFINITIONS.get(policyKey.getIdentifier());

        if (genericPolicyDefinition == null) {

            Slogf.wtf(TAG, "Error parsing PolicyKey, Unknown generic policy key: " + policyKey);

            return null;