A value that indicates which element types from the source document to drop (ignore) when merging. The default value is SvgDropFlags.None, which means no elements are dropped.
Use this value to drop (ignore) element types in the source document when merging. For example, to ignore all image elements from the source document in the resulting SVG, add SvgDropFlags.Images to this value.
When calling SvgDocument.MergeWith, the source document is the SVG document passed to the method and the destination document is the object itself.