Delegated extension properties for Map

Language Design
1

Hello!

I’m in need of defining extension properties on Map and MutableMap interfaces, so that this properties will be readonly on Map interface and read write on MutableMap.

The only way I found to achieve this is follows:

val Map<String, String>.myProp: String by MyReadOnlyDelegate()

var MutableMap<String, String>.myProp: String by MyReadWriteDelegate()
    @JvmName("get_myProp2")  // this needed to resolve platform declaration clash

This is poor solution because I need to define same property twice and same getter twice.
Also if I will need to rename this property I must remember to rename both versions of it.

Is it possible to follow this logic in this special case?
1 If one define val extension property for Map or MutableMap, it should be accessible from both of them
2 If one define var extension property for MutableMap, its getter should also be accessible from immutable map reference(Map)

Thanks!

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