class_docstr: Make blob objects behave like Python strings.
  
  Expects that classes that use this mixin to have a _strkey() method that
  returns the string to apply string methods to. Using _strkey() instead
  of __str__ ensures consistent behavior between Python 2 and 3.
docstr: Behaves like the built-in str.rfind() method. Returns an integer,
  the index of he last (right-most) occurence of the substring argument
  sub in the sub-sequence given by [start:end].
docstr_tok: ["Behaves","like","the","built-in","str.rfind","(",")","method",".","Returns","an","integer",",","the","index","of","he","last","(","right-most",")","occurence","of","the","substring","argument","sub","in","the","sub-sequence","given","by","[","start",":","end","]","."]
code: def rfind(self, sub, start=0, end=sys.maxsize):
      """Behaves like the built-in str.rfind() method. Returns an integer,
      the index of he last (right-most) occurence of the substring argument
      sub in the sub-sequence given by [start:end].
      """
      return self._strkey().rfind(sub, start, end)
  
imports: from __future__ import absolute_import
  import sys
  from textblob.compat import basestring, implements_to_string, PY2, binary_type
label_desc: Use image node_id 8 for calling the StringlikeMixin obj's underlying member method code with example usage: obj.rfind(sub, start, end) and returns: self