code: def testFireTraceHasError(self):
      t = trace.FireTrace("start")
      self.assertFalse(t.HasError())
      t.AddAccessedProperty("t", "final", None, "example.py", 10)
      self.assertFalse(t.HasError())
      t.AddError(ValueError("example error"), ["arg"])
      self.assertTrue(t.HasError())
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from fire import testutils
  from fire import trace
label_desc: Use image node_id 3 for calling the FireTraceTest obj's underlying member method code with example usage: obj.testFireTraceHasError() without return types