feat(gapic-generator-java): Extract resource name heuristicly #267

Job	Run time
filter	57s
showcase-clirr	5m 1s
gapic-generator-java-bom	2m 14s
build(21) except self-service clients	2m 31s
build(8) for gapic-generator-java	2m 19s
build(8) except for gapic-generator-java	2m 46s
build(25) except self-service clients	2m 32s
build(8) for showcase	8m 57s
showcase (21)	10m 3s
showcase (11)	9m 39s
showcase (17)	10m 5s
dependency_analyzer_unit_test	1m 12s
showcase (25)	10m 6s
build (11)	2m 44s
unmanaged_dependency_check	7m 10s
build (17)	2m 38s
	1h 20m 54s

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