private void read(JsonDataMap data)
{
if (data == null || data.Count == 0 || data.Count > 1)
{
throw new ConfigException(StringConsts.CONFIG_JSON_MAP_ERROR);
}
var root = data.First();
var sect = root.Value as JsonDataMap;
if (sect == null)
{
throw new ConfigException(StringConsts.CONFIG_JSON_MAP_ERROR);
}
m_Root = buildSection(root.Key, sect, null);
m_Root.ResetModified();
}