Mutable Map

count -> Int

isEmpty -> Boolean

isNotEmpty -> Boolean

echo -> Unit

clear -> Unit

keys -> MutableSet::T

values -> MutableSet::G

+ MutableMap(T, G) -> MutableMap(T, G)

- MutableMap(T, G) -> G

forEach: [T, G -> Unit] -> Unit

map: [T, G -> Unit] -> Unit

filter: [T, G -> Unit] -> Unit

at: T put: G -> Unit

at: T -> G?

remove: T -> T?

putAll: MutableMap(T, G) -> Unit

containsKey: T -> Boolean

containsValue: G -> Boolean