internal ExtendedBy(By by)
{
by.CheckNotNull(nameof(by));
ExtendedBy byAsExtended = by as ExtendedBy;
this.by = byAsExtended?.by ?? by;
Description = this.by.ToString();
Options = byAsExtended?.Options?.Clone() ?? SearchOptions.Unsafely();
if (byAsExtended != null)
{
ElementName = byAsExtended.ElementName;
ElementKind = byAsExtended.ElementKind;
}
}