code: def _SetupWSGIApp(self):
      logdir = self.log_dir
      multiplexer = event_multiplexer.EventMultiplexer()
      provider = data_provider.MultiplexerDataProvider(
          multiplexer, logdir
      )
      context = base_plugin.TBContext(
          logdir=logdir, data_provider=provider
      )
      self.plugin = projector_plugin.ProjectorPlugin(context)
      wsgi_app = application.TensorBoardWSGI([self.plugin])
      self.server = werkzeug_test.Client(wsgi_app, wrappers.Response)
  
imports: import gzip
  import io
  import json
  import os
  import numpy
  import tensorflow
  import unittest
  from werkzeug import test
  from werkzeug import wrappers
  from google.protobuf import text_format
  from tensorboard.backend import application
  from tensorboard.backend.event_processing import data_provider
  from tensorboard.backend.event_processing import plugin_event_multiplexer
  from tensorboard.compat.proto import event_pb2
  from tensorboard.compat.proto import summary_pb2
  from tensorboard.compat import tf
  from tensorboard.plugins import base_plugin
  from tensorboard.plugins.projector import projector_config_pb2
  from tensorboard.plugins.projector import projector_plugin
  from tensorboard.util import test_util
label_desc: Use image node_id 20 for calling the ProjectorAppTest obj's underlying member method code with example usage: obj._SetupWSGIApp() without return types