That was initializer: ``` val v = listOf(TypeB("B1...
# getting-started
That was initializer:
Copy code
val v = listOf(TypeB("B1", "A1"), TypeB("B2", "A2"), TypeB("B3", "A2")).groupBy { TypeA(it.a) }
And it was a
Map<TypeA, List<TypeB>>
, so I would like to: 1. separate initialization and population 2. make the map observable and mutable (to be able to add new items <key, value>) 3. make list mutable as well, to be able to add to list of values