True if maybeAssociative is either a Keyed or Indexed Collection.
isAssociative(maybeAssociative: unknown): boolean
const { isAssociative, Map, List, Stack, Set } = require('immutable');
isAssociative([]); // false
isAssociative({}); // false
isAssociative(Map()); // true
isAssociative(List()); // true
isAssociative(Stack()); // true
isAssociative(Set()); // falserun it