public PpsSysMethodSelectorToken(PpsSysDataSource dataSource, string name, string path, MethodInfo method)
{
this.dataSource = dataSource;
this.name = name;
this.path = path;
this.method = method;
} // ctor
internal PpsSysConnectionHandle(PpsSysDataSource dataSource, IIdentity identity)
{
this.dataSource = dataSource ?? throw new ArgumentNullException(nameof(dataSource));
this.identity = identity ?? throw new ArgumentNullException(nameof(identity));
} // ctor
