class_docstr: Benchmark that times performance of numexpr execution.
code: def teardown(self):
      self.session.stop_server()
  
file_path: mars/benchmarks/asv_bench/benchmarks/execution.py
imports: import dataclasses
  import unittest.mock
  import mars.tensor
  from mars import new_session
  from mars.core.graph import TileableGraph, TileableGraphBuilder, ChunkGraphBuilder, ChunkGraph
  from mars.serialization import serialize
  from mars.services.task import new_task_id
  from mars.services.task.execution.ray import executor
label_desc: Use image node_id 2 for calling the NumExprExecutionSuite obj's underlying member method code with example usage: obj.teardown() without return types