code: def test_clone():
      st = ScalarType("int64")
      assert st == st.clone()
      assert st.clone("float64").dtype == "float64"
  
imports: import numpy
  from pytensor.configdefaults import config
  from pytensor.scalar.basic import IntDiv, ScalarType, TrueDiv, complex64, float32, float64, int8, int32
label_desc: Use image node_id 4 for calling a global function with example usage: test_clone() without return types