code: def test_local_composite_literal_slice(self):
      def f(n):
          while n > 0:
              d = {"x": n}
              d["x"] = d["x"]
              n -= 1
          return n
  
      self.assertTransformedResult(f, custom_constant(5), 0)
  
imports: import collections
  from nvidia.dali._autograph.converters import break_statements
  from nvidia.dali._autograph.converters import continue_statements
  from nvidia.dali._autograph.converters import control_flow
  from nvidia.dali._autograph.core import converter_testing
  from nvidia.dali._autograph.utils.all_utils import custom_constant
label_desc: Use image node_id 8 for calling the WhileStatementTest obj's underlying member method code with example usage: obj.test_local_composite_literal_slice() and returns: n