KtBinaryExpression(128,139): 'm["a"] += 1'
  KaSymbolResolutionSuccess:
    symbols = [
      /MyMap.get(<dispatch receiver>: MyMap<K, V>, k: K): V,
      kotlin/Int.plus(<dispatch receiver>: kotlin.Int, other: kotlin.Int): kotlin.Int,
      /MyMap.set(<dispatch receiver>: MyMap<K, V>, k: K, v: V): kotlin.Unit
    ]
