``` public interface IDocumentSavingCallb ``` Implement this interface if you want to have your own custom method called during saving a document. **Examples:** Shows how to manage a document while......supported: Docx, FlatOpc, Docm, Dotm, Dotx. OoxmlSaveOptions saveOptions...DOTM, "dotm"}, {SaveFormat.DOTX, "dotx"}, {SaveFormat.FLAT_OPC,...