Gson is unable to serialise Kotlin subclass which overrides fields.

# Problem solved by the feature
Gson will be able to easily serialise subclasses with overridden fields.

# Feature description
Gson is unable to serialise Kotlin subclass which overrides **fields** gives error **multiple JSON fields named**. Gson should ignore the parents value when a value gets overridden. Use childs name and value when serializing.

# Alternatives / workarounds
Use transient keyword either in parent or child class.