code: func (c *Client) GetRole(name string) (services.Role, error) {
  	if name == "" {
  		return nil, trace.BadParameter("missing name")
  	}
  	out, err := c.Get(c.Endpoint("roles", name), url.Values{})
  	if err != nil {
  		return nil, trace.Wrap(err)
  	}
  	role, err := services.GetRoleMarshaler().UnmarshalRole(out.Bytes(), services.SkipValidation())
  	if err != nil {
  		return nil, trace.Wrap(err)
  	}
  	return role, nil
  }
docs: // GetRole returns role by name