public RequireCategoriesAttribute(ChannelCheckMode checkMode, params string[] channelNames)
 {
     CheckMode     = checkMode;
     CategoryNames = new ReadOnlyCollection <string>(channelNames);
 }
 public RequiredChannelAttribute(ChannelCheckMode checkMode, params string[] channelNames)
 {
     ChannelNames = new ReadOnlyCollection <string>(channelNames);
     CheckMode    = checkMode;
 }