Function	Description
map_concat(map, ...)	Returns the union of all the given maps
map_entries(map)	Returns an unordered array of all entries in the given map.
map_from_entries(arrayOfEntries)	Returns a map created from the given array of entries.
map_keys(map)	Returns an unordered array containing the keys of the map.
map_values(map)	Returns an unordered array containing the values of the map.