code: def test_nongeometry_multiple(self):
      assert type(self.df[["value1", "value2"]]) is DataFrame
  
imports: from pandas import DataFrame, Series
  from shapely.geometry import Point
  from geopandas import GeoDataFrame, GeoSeries
label_desc: Use image node_id 5 for calling the TestDataFrame obj's underlying member method code with example usage: obj.test_nongeometry_multiple() without return types