code: func (c *Client) FirewallPolicy(identifier string) (*FirewallPolicy, error) {
  	policy := new(FirewallPolicy)
  	_, err := c.MakeApiRequest("GET", "/1.0/firewall_policies/"+identifier, nil, policy)
  	if err != nil {
  		return nil, err
  	}
  	return policy, err
  }
docs: // FirewallPolicy retrieves a detailed view of one firewall policy