code: def site(self, site):
          
          if site is None:
              raise ValueError("Invalid value for `site`, must not be `None`")
          if site is not None and len(site) > 255:
              raise ValueError("Invalid value for `site`, length must be less than or equal to `255`")
          if site is not None and len(site) < 3:
              raise ValueError("Invalid value for `site`, length must be greater than or equal to `3`")
          if site is not None and not re.search('(?:[a-z](?:[-a-z0-9]{0,61}[a-z0-9])?\\.)+[a-z]{2,}(?:@[a-z0-9](?:[-.](?=[a-z0-9])|[a-z0-9]){0,29})?', site):
              raise ValueError("Invalid value for `site`, must be a follow pattern or equal to `/(?:[a-z](?:[-a-z0-9]{0,61}[a-z0-9])?\\.)+[a-z]{2,}(?:@[a-z0-9](?:[-.](?=[a-z0-9])|[a-z0-9]){0,29})?/`")
  
          self._site = site
docs: Sets the site of this OauthTokenReference.
  
          :param site: The site of this OauthTokenReference.
          :type: str