code: def test_global():
      v = relay.GlobalVar("f")
      check_visit(v)
  
imports: import tvm
  from tvm import te
  from tvm import relay
  from tvm.relay import ExprFunctor, ExprMutator, ExprVisitor
label_desc: Use image node_id 5 for calling a global function with example usage: test_global() without return types