code: def has_workload(self, mod: IRModule) -> bool:
      for workload in self.workloads_:
          if tvm.ir.structural_equal(mod, workload.mod):
              return True
  
imports: import os.path
  import tempfile
  from typing import Callable, List, Optional
  import pytest
  import tvm
  import tvm.testing
  from tvm import meta_schedule
  from tvm import relay, tir
  from tvm.ir.module import IRModule
  from tvm.meta_schedule.database import TuningRecord, Workload
  from tvm.script import tir
  from tvm.target import Target
  from tvm.tir import Schedule
label_desc: Use image node_id 2 for calling the PyMemoryDatabaseDefault obj's underlying member method code with example usage: obj.has_workload(mod) and returns: True