code: def delete_forwarding_address(payment_id, coin_symbol='btc', api_key=None):
      '''
      Delete a forwarding address on a specific blockchain, using its
      payment id
      '''
  
      assert payment_id, 'payment_id required'
      assert is_valid_coin_symbol(coin_symbol)
      assert api_key, 'api_key required'
  
      params = {'token': api_key}
  
      url = make_url(**dict(payments=payment_id))
  
      r = requests.delete(url, params=params, verify=True, timeout=TIMEOUT_IN_SECONDS)
      return get_valid_json(r, allow_204=Truef delete_forwarding_address(payment_id, coin_symbol='btc', api_key=None):
      '''
      Delete a forwarding address on a specific blockchain, using its
      payment id
      '''
  
      assert payment_id, 'payment_id required'
      assert is_valid_coin_symbol(coin_symbol)
      assert api_key, 'api_key required'
  
      params = {'token': api_key}
  
      url = make_url(**dict(payments=payment_id))
  
      r = requests.delete(url, params=params, verify=True, timeout=TIMEOUT_IN_SECONDS)
      return get_valid_json(r, allow_204=True)
docs: Delete a forwarding address on a specific blockchain, using its
      payment id