jj: throw exception instead of swallowing

Filesystem/File.vb

@@ -30,20 +30,16 @@ Public Class File
     End Sub
 
     ''' <summary>
-    ''' Removes files in a directory filtered by filename, extension and last write date.
+    ''' Removes files in a directory filtered by filename, extension and last write date
     ''' </summary>
     ''' <param name="Path">The directory in which files will be deleted</param>
     ''' <param name="FileKeepTime">Only delete files which are older than x days. Must be between 0 and 1000 days.</param>
     ''' <param name="FileBaseName">A filename filter which will be checked</param>
     ''' <param name="FileExtension">A file extension which will be checked</param>
     ''' <param name="ContinueOnError">Should the function continue with deleting when a file could not be deleted?</param>
-    ''' <exception cref="ArgumentException">When Path is not a directory</exception>
-    ''' <exception cref="DirectoryNotFoundException">When Path was not found</exception>
-    ''' <exception cref="ArgumentOutOfRangeException">When FileKeepTime is below 0 or above 1000</exception>
     ''' <returns>True if all files were deleted or if no files were deleted, otherwise false</returns>
     Public Function RemoveFiles(Path As String, FileKeepTime As Integer, FileBaseName As String, Optional FileExtension As String = "log", Optional ContinueOnError As Boolean = True) As Boolean
         If Not TestPathIsDirectory(Path) Then
-
             Throw New ArgumentException($"Path {Path} is not a directory!")
         End If
 
@@ -97,4 +93,5 @@ Public Class File
         Dim oIsDirectory As Boolean = (System.IO.File.GetAttributes(Path) And FileAttributes.Directory) = FileAttributes.Directory
         Return oIsDirectory
     End Function
+
 End Class