code: def is_valid_filter(self, filter):
      return self._async_queue(
          "is_valid_filter", "table_method", filter
      )
  
imports: import asyncio
  from functools import partial
  from .dispatch import async_queue, subscribe, unsubscribe
  from .view_api import view
label_desc: Use image node_id 13 for calling the PerspectiveTableProxy obj's underlying member method code with example usage: obj.is_valid_filter(filter) and returns: self