code: def test_manager_host(self):
      manager = PerspectiveManager()
      table = Table(data)
      manager.host(table)
      table.update({"a": [4, 5, 6], "b": ["d", "e", "f"]})
      names = manager.get_table_names()
      assert manager.get_table(names[0]).size() == 6
  
imports: import json
  import time
  import numpy
  import pyarrow
  from datetime import datetime
  from functools import partial
  from pytest import raises
  from perspective import Table, PerspectiveError, PerspectiveManager
label_desc: Use image node_id 5 for calling the TestPerspectiveManager obj's underlying member method code with example usage: obj.test_manager_host() without return types