class_docstr: shared implementation for filesystem path objects.
docstr: extension of the path (including the '.').
docstr_tok: ["extension","of","the","path","(","including","the","'",".","'",")","."]
code: def ext(self):
      """extension of the path (including the '.')."""
      return self._getbyspec("ext")[0]
  
imports: import warnings
  import os
  import sys
  import posixpath
  import fnmatch
  import py
label_desc: Use image node_id 5 for calling the PathBase obj's underlying member method code with example usage: obj.ext() and returns: self