public void setSuperClass(FullyQualifiedJavaType superClass) {
        this.superClass = superClass;
    }
@Test
    void testSetSuperClass() {
        InnerClass clazz = new InnerClass("com.foo.UserClass");

        assertFalse(clazz.getSuperClass().isPresent());
        clazz.setSuperClass("com.hoge.SuperClass");
        assertNotNull(clazz.getSuperClass());
        assertEquals("com.hoge.SuperClass", clazz.getSuperClass().get().getFullyQualifiedName());
    }