class_docstr: A class capable of drawing a collection of geometries
  obtained from an OGC Web Feature Service (WFS).
  
  This feature requires additional dependencies. If installed via pip,
  try ``pip install cartopy[ows]``.
code: def intersecting_geometries(self, extent):
      geoms = self.source.fetch_geometries(self.crs, extent)
      return iter(geoms)
  
imports: from abc import ABCMeta, abstractmethod
  import numpy
  import shapely.geometry
  import cartopy.crs
  import cartopy.io.shapereader
label_desc: Use image node_id 3 for calling the WFSFeature obj's underlying member method code with example usage: obj.intersecting_geometries(extent) and returns: iter