List defaultChannelIds = getService().getDefaultChannels(); if (defaultChannelIds != null && defaultChannelIds.size() > 0)
List<String> defaultChannelIds = getService().getDefaultChannels(); if (defaultChannelIds != null && defaultChannelIds.size() > 0)
List<String> defaultChannelIds = getService().getDefaultChannels(); if (defaultChannelIds != null && defaultChannelIds.size() > 0)