code: def get_public_dsn(self, scheme=None):
          
          if self.is_enabled():
              url = self.remote.get_public_dsn()
              if scheme:
                  return '%s:%s' % (scheme, url)
  
              return url
docs: Returns a public DSN which is consumable by raven-js
  
          >>> # Return scheme-less DSN
          >>> print client.get_public_dsn()
  
          >>> # Specify a scheme to use (http or https)
          >>> print client.get_public_dsn('https')