/// <summary>
/// Create <see cref="NewFolding"/>s for the specified document and updates the folding manager with them.
/// </summary>
public void UpdateFoldings(FoldingManager manager, TextDocument document)
{
int firstErrorOffset;
IEnumerable <NewFolding> foldings = _strategy.CreateNewFoldings(document, out firstErrorOffset);
var errors = foldings.Where(f => f.StartOffset <0 || f.EndOffset> document.TextLength).ToArray();
manager.UpdateFoldings(foldings, firstErrorOffset);
}
