func (c *Client) GetSystemInfo() (*SystemInfo, error) {
	sysInfo := &SystemInfo{}
	err := c.get([]string{"system", "info"}, nil, sysInfo)
	return sysInfo, err
}
func (c *Client) GetSystemInfo() (*SystemInfo, error) {
	sysInfo := &SystemInfo{}
	err := c.get([]string{"system", "info"}, nil, sysInfo)
	return sysInfo, err
}
// GetSystemInfo retrieves and returns miscellaneous system information about the Rundeck server
// and the machine it's running on.