code: def test_drop_filter(self):
      logger = FakeLogger()
      filtered = filters.KeyFilter(logger, drop=("foo",))
      filtered.write({"foo": "bar", "baz": 12})
      row, *_ = logger.data
      self.assertIn("baz", row)
      self.assertNotIn("foo", row)
  
imports: import time
  from acme.utils.loggers import base
  from acme.utils.loggers import filters
  from absl.testing import absltest
label_desc: Use image node_id 2 for calling the KeyFilterTest obj's underlying member method code with example usage: obj.test_drop_filter() without return types