Expected behavior

Given the input with the empty object type

I expect the generated type should looks like the following

Actual behavior

Given the input with the empty object type

the actual generated looks like

Given the input with the object type with some default value

the generated file have some default value inside, but the type is not correct.

Steps to reproduce

1. clone https://github.com/Netflix/dgs-examples-kotlin
2. Modify the graphql schema to

input Something {
    sth1: Int = 0
    sth2: String = ""
}

input TitleFormat {
    uppercase: Boolean
    someInput: Something = {}
}

OR

input Something {
    sth1: Int = 0
    sth2: String = ""
}

input TitleFormat {
    uppercase: Boolean
    someInput: Something = { sth1: 1, sth2: "test" }
}

3. run ./gradlew generateJava
4. open ./build/generated/com/example/demo/generated/types/TitleFormat.kt

Repost from Netflix/dgs-framework#755