<uap5:MediaSource
DisplayName = 'An optional string with a value between 1 and 256 characters in length. This string is localizable.'
Description = 'An optional string with a value between 1 and 2048 characters in length.'
AppServiceName = 'A string with a value between 2 and 39 characters in length that consists of alphanumeric characters, periods (except for the first character), and dashes only.' >
<!-- Child elements -->
uap5:SupportedFileTypes
uap5:SupportedContentTypes
</uap5:MediaSource>