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kotlinlang

I have a data class 
```
data class SectionMenuModel(@SerializedName("title") val title: String,
	@SerializedName("type") val type: MenuTypeModel,
	@SerializedName("enabled") val enabled: Boolean)
```
and MenutypeModel as a sealed class
```

sealed class MenuTypeModel {

	object MAP : MenuTypeModel()
	object CALENDAR : MenuTypeModel()
	object LEADERBOARD : MenuTypeModel()

}
```
while parsing this SectionMenuModel response from an api I get the error 
```
Failed to invoke private MenuTypeModel() with no args
```
I am trying to use menutype model as kind of enum