class_docstr: A placeholder for an in process query.
  
  This can be used to do something else while a query is running.
  The queries can be cancelled. You can peek if the query is finished,
  or you can await the result.
docstr: Fetch the result.
  
  If it is ready, a materialized DataFrame is returned.
  If it is not ready it will return `None`.
docstr_tok: ["Fetch","the","result",".","If","it","is","ready",",","a","materialized","DataFrame","is","returned",".","If","it","is","not","ready","it","will","return","`","None","`","."]
code: def fetch(self) -> DataFrame | None:
      """
      Fetch the result.
  
      If it is ready, a materialized DataFrame is returned.
      If it is not ready it will return `None`.
      """
      out = self.ipq.fetch()
      if out is not None:
          return wrap_df(out)
      return None
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING
  from polars.utils._wrap import wrap_df
label_desc: Use image node_id 3 for calling the InProcessQuery obj's underlying member method code with example usage: obj.fetch() and returns: None, wrap_df