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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def render_doc(self):
    '''Override this method to customize the documentation page'''
    if self._doc_view:
      return self._doc_view()
    elif not self._doc:
      self.abort(self.bc_HTTPStatus_NOT_FOUND)
    res = render_template('swagger-ui.html', title=self.title, specs_url=self.specs_url)
    res = res.replace(self.complexReplaceString,self.APIDOCSPath)

    regexp="\"https?:\/\/[a-zA-Z0\-9._]*(:[0-9]*)?" + self.internal_api_prefix.replace("/","\/") + "\/swagger.json\""
    regexp="\"https?:\/\/[a-zA-Z0\-9._]*(:[0-9]*)?" + self.internal_apidoc_prefix.replace("/","\/") + "\/swagger.json\""
    p = re.compile(regexp)
    res = p.sub("\"" + self.apidocsurl + "/swagger.json\"", res)
    '''
    if (self.overrideAPIDOCSPath()):
      #print("About to replace")
      #print(res)
      res = self.reaplcements(res)
      #print("Replaced")
      #print(res)
      #print("End")
    '''
    return res