def isSame(a, b):
    """Type (b) is the same as (a) if (a) and (b) are identicial, that means
	that you can use b where you use a, and this also means that isSame(a,b) ==
	isSame(b,a). Basically, when (b) is same as (a), (b) can be considered as an
	alias for (a)."""
    a.isSame(b)
