SmartScreen turned off -> Java Webstart JNLP Files are marked as "can harm your computer"

Starting with Edge v85 (currently in beta) there is a new policy "ExemptDomainFileTypePairsFromFileTypeDownloadWarnings" available which solves this issue:

See Documentation:

https://docs.microsoft.com/en-us/deployedge/microsoft-edge-policies#exemptdomainfiletypepairsfromfiletypedownloadwarnings

I can confirm this works with
Edge Beta 85.0.564.30
Edge Dev 86.0.594.1

BUT be aware: The text in the documentation is correct, but the given Samples in the documentation are currently wrong!

Citing the Sample in the docs:

SOFTWARE\Policies\Microsoft\Edge\ExemptDomainFileTypePairsFromFileTypeDownloadWarnings\1
= {'domains': ['https://contoso.com', 'contoso2.com'], 'file_extension': 'jnlp'}

The single quotes in the examples are wrong, only double quotes are accepted and work! So this should be corrected to:
= {"domains": ["https://contoso.com", "contoso2.com"], "file_extension": "jnlp"}

To check my JNLP JavaWebStart Sample-Link https://hitco.at/java-webstart-demo/ successfully working, use following registry-Keys:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge\ExemptDomainFileTypePairsFromFileTypeDownloadWarnings]
"1"="{\"domains\": [\"https://*.hitco.at\", \"https://hitco.at\"], \"file_extension\": \"jnlp\"}"