private IDictionary <string, object> SetDefaultExtra(IDictionary <string, object> extra = null)
{
if (extra == null)
{
extra = new Dictionary <string, object>();
}
if (DefaultExtra != null)
{
foreach (var defaultExtraItem in DefaultExtra.ToList())
{
extra[defaultExtraItem.Key] = defaultExtraItem.Value;
}
}
return(_platform.AppendPlatformExtra(extra));
}