Hi ! I'm starting out with prefect 2 and was wondering if it's possible to create a graph from a flow definition ? And the validate this graph ? let's say I have the following flow

@flow
def my_flow():
    a = subflow1(...)
    b = subflow2(...)
    c = subflow3(a)

Would it be possible to create a graph from this and raise an error because subflow2 is a dangling node ?