docstr: Garbage collect views that belong to closed connections.
docstr_tok: ["Garbage","collect","views","that","belong","to","closed","connections","."]
code: def clear_views(self, client_id):
      """Garbage collect views that belong to closed connections."""
      count = 0
      names = []
  
      if not client_id:
          raise PerspectiveError(
              "Cannot garbage collect views that are not linked to a specific client ID!"
          )
  
      for name, view in self._views.items():
          if view._client_id == client_id:
              if self._loop_callback:
                  self._loop_callback(view.delete)
              else:
                  view.delete()
              names.append(name)
              count += 1
  
      for name in names:
          self._views.pop(name)
  
      if count > 0:
          logging.debug(
              "client {} disconnected - GC {} views in memory".format(
                  client_id, count
              )
          )
  
imports: import datetime
  import json
  import logging
  from collections import deque
  from functools import partial
  from ..core.exception import PerspectiveError
  from ..table import PerspectiveCppError, Table
  from ..table._callback_cache import _PerspectiveCallBackCache
  from ..table._date_validator import _PerspectiveDateValidator
label_desc: Use image node_id 9 for calling the _PerspectiveManagerInternal obj's underlying member method code with example usage: obj.clear_views(client_id) without return types