Class<?> rawClass = (Class<?>) parameterizedType.getRawType();
      TypeVariable<?>[] vars = rawClass.getTypeParameters();
      Type[] typeArgs = parameterizedType.getActualTypeArguments();
      checkState(vars.length == typeArgs.length);
      for (int i = 0; i < vars.length; i++) {
        map(new TypeVariableKey(vars[i]), typeArgs[i]);
      }
      visit(rawClass);

      Class<?> rawClass = (Class<?>) parameterizedType.getRawType();
      TypeVariable<?>[] vars = rawClass.getTypeParameters();
      Type[] typeArgs = parameterizedType.getActualTypeArguments();
      checkState(vars.length == typeArgs.length);
      for (int i = 0; i < vars.length; i++) {
        map(new TypeVariableKey(vars[i]), typeArgs[i]);
      }
      visit(rawClass);

        }
        if (type instanceof GenericArrayType) {
            final GenericArrayType genericArrayType = GenericArrayType.class.cast(type);
            final Class<?> rawClass = getRawClass(genericArrayType.getGenericComponentType());
            return Array.newInstance(rawClass, 0).getClass();
        }
        return null;
    }

    /**
     * <code>type</code>の型引数の配列を返します。
     * <p>

        final Class<?> rowClass = getActualClass(type, map);
        if (rowClass == null) {
            return null;
        }
        final ParameterizedClassDescImpl desc = new ParameterizedClassDescImpl(rowClass);
        final Type[] parameterTypes = getGenericParameters(type);
        if (parameterTypes == null) {