/** Map of type arguments and type variables */
    protected final Map<TypeVariable<?>, Type> typeVariables;

    /** Map from property name to {@link PropertyDesc} */
    protected final CaseInsensitiveMap<PropertyDesc> propertyDescCache = new CaseInsensitiveMap<>();

    /** Map from field name to {@link FieldDescImpl} */
    protected final ArrayMap<String, FieldDesc> fieldDescCache = new ArrayMap<>();

    /** Array of {@link ConstructorDesc} */