Fix URI template derivation and lookup (#530) #492

Job	Run time
build (ubuntu-latest, Release)	2m 25s
build (windows-latest, Release)	6m 39s
build (ubuntu-latest, Debug)	2m 35s
build (macos-latest, Debug)	10m 4s
build (windows-latest, Debug)	6m 49s
build (macos-latest, Release)	2m 25s
publish-coverage	0s
	30m 57s

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