code: def test_ref_kind():
      # only contain type kinds
      tt = relay.TensorType(tvm.runtime.convert([1, 2, 3]), "float32")
      ft = relay.FuncType(
          tvm.runtime.convert([]),
          tt,
          tvm.runtime.convert([]),
          tvm.runtime.convert([]),
      )
  
      rt1 = relay.RefType(tt)
      assert check_kind(rt1) == relay.TypeKind.Type
      rt2 = relay.RefType(ft)
      assert check_kind(rt2) == relay.TypeKind.Type
      rt3 = relay.RefType(relay.TupleType([rt1, rt2]))
      assert check_kind(rt3) == relay.TypeKind.Type
  
imports: import tvm
  from tvm import te
  from tvm import relay
  from tvm.relay.analysis import check_kind
  import pytest
label_desc: Use image node_id 4 for calling a global function with example usage: test_ref_kind() without return types