code: def newAddress(self, currency='btc', label=''):
          
          request = '/v1/deposit/' + currency + '/newAddress'
          url = self.base_url + request
          params = {
              'request': request,
              'nonce': self.get_nonce()
          }
  
          if label != '':
              params['label'] = label
  
          return requests.post(url, headers=self.prepare(params))
docs: Send a request for a new cryptocurrency deposit address
          with an optional label. Return the response.
  
          Arguements:
          currency -- a Gemini supported cryptocurrency (btc, eth)
          label -- optional label for the deposit address