public List <Group> GetGroups(Group group)
{
List <Group> result = new List <Group>();
var allGroups = _groupManager.GetGroups();
var groupsByName = allGroups.Where(x => x.Name.Equals(group.Name)).ToList();
result = _groupManager.AddToExistingGroups(ref result, groupsByName);
var groupsByGid = allGroups.Where(x => x.Gid.Equals(group.Gid)).ToList();
result = _groupManager.AddToExistingGroups(ref result, groupsByGid);
List <Group> groupsByMembers;
if (group.Members?.Count > 0)
{
groupsByMembers = allGroups.Where(x => x.Members.Intersect(group.Members).Count() == group.Members.Count()).ToList();
result = _groupManager.AddToExistingGroups(ref result, groupsByMembers);
}
return(result);
}