user/group.go
func NewGroup(name string, members ...string) *Group {
	return &Group{
		Name:     name,
		password: "",
		GID:      -1,
		UserList: members,
	}
}
func NewGroup(name string, members ...string) *Group {
	return &Group{
		Name:     name,
		password: "",
		GID:      -1,
		UserList: members,
	}
}
func NewGroup ( name string , members ... string ) * Group { return & Group { Name : name , password : " " , GID : - 1 , UserList : members , } }
// AddGroup returns a new Group.
AddGroup returns a new Group .