generatesKeys
infix inline fun <Key, Value, MapType : Map<Key, Value>> KProperty1<Root, MapType>.generatesKeys(noinline generator: Generator<Key>): MapKeySpec<Key, Value, MapType>
Generates map keys for this property by invoking generator.
infix fun <Key, Value, MapType : Map<Key, Value>> PropertyPath<Root, MapType>.generatesKeys(generator: Generator<Key>): MapKeySpec<Key, Value, MapType>
Generates map keys for this nested property path by invoking generator.