ChannelStyle userStyle = getDefaultStyle(guestId,source.name,channel.name);
if (userStyle != null)
channel.style = userStyle;
if (mapping.apiKeyId != null){
final AbstractBodytrackResponder bodytrackResponder = api.getConnector().getBodytrackResponder(beanFactory);
AbstractBodytrackResponder.Bounds bounds = bodytrackResponder.getBounds(mapping);
channel.min_time = bounds.min_time;
channel.max_time = bounds.max_time;
channel.min = bounds.min;
channel.max = bounds.max;
source.min_time = Math.min(source.min_time,channel.min_time);