* same {@code GenericDeclaration}.
     */
    boolean equalsType(Type type) {
      if (type instanceof TypeVariable) {
        return equalsTypeVariable((TypeVariable<?>) type);
      } else {
        return false;
      }
    }

    private boolean equalsTypeVariable(TypeVariable<?> that) {
      return var.getGenericDeclaration().equals(that.getGenericDeclaration())
          && var.getName().equals(that.getName());

     * same {@code GenericDeclaration}.
     */
    boolean equalsType(Type type) {
      if (type instanceof TypeVariable) {
        return equalsTypeVariable((TypeVariable<?>) type);
      } else {
        return false;
      }
    }

    private boolean equalsTypeVariable(TypeVariable<?> that) {
      return var.getGenericDeclaration().equals(that.getGenericDeclaration())
          && var.getName().equals(that.getName());