class_docstr: Fake GRIB file returned by pygrib.open.
class_docstr_tok: ["Fake","GRIB","file","returned","by","pygrib.open","."]
docstr: Get a message.
docstr_tok: ["Get","a","message","."]
code: def message(self, msg_num):
      """Get a message."""
      return self._messages[msg_num - 1]
  
imports: import os
  import sys
  from unittest import mock
  import numpy
  import pytest
  import xarray
  from satpy.dataset import DataQuery
label_desc: Use image node_id 2 for calling the FakeGRIB obj's underlying member method code with example usage: obj.message(msg_num) and returns: self