# Get the Github user with `login`
	#
	# Loads the `User` from the API or returns `null` if the user cannot be found.
	#
	# ~~~nitish
	# var api = new GithubAPI(get_github_oauth)
	# var user = api.get_user("Morriar")
	# print user or else "null"
	# assert user.login == "Morriar"
	# ~~~
	fun get_user(login: String): nullable User do
		return get("/users/{login}").as(nullable User)
	end