Is there an equivalent of isinstance() of python

[wonderyl]

General Question

I'm trying to write a function that behaves differently based on the type of the schemas. E.g.

schema Parent:
  a: int

schema Child(Parent):
  b: int

schema GrandChild(Child):
  b = 2

schema foo[s: any]:
  output: int

  if isinstance(s, Child):
    output = s.b
  else:
    output = s.a

bar = foo(GrandChild{})

The build in typeof() function doesn't work because it doesn't expose inheritance chain.

Any suggested would be appreciated.