Why FileSystemEntry not extends FileSystemEntryMetadata

[Rickyc81]

Hi,as title, why i can use modificationTime and size in NgxFileDropEntry interface??? your demo has these properties in the table, but your library doesn't implement those two properties in the interface..

also, your demo has the two properties on the table, but your package version in the demo repository is 5, while your library is at version 16

Thanks
Ric