Update HandlerMappingIntrospector Usage in CORS support #208

Job	Run time
Test Against Snapshots (21-ea, 21) / Test	9m 49s
Build (ubuntu-latest, 17) / Build	9m 41s
Test Against Snapshots (17, 17) / Test	9m 55s
Build (windows-latest, 17) / Build	13m 18s
Check Samples	0s
Send Notification	3s
Deploy Schema	0s
Perform Release	0s
Deploy Artifacts	0s
Deploy Docs	0s
	42m 46s

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