support multiple models of the same type #1042

Job	Run time
build	2m 12s
Julia 1.6 - ubuntu-latest - x64	4m 12s
Julia 1.6 - macOS-latest - x64	4m 23s
Julia 1.6 - windows-latest - x64	12m 30s
Julia 1 - ubuntu-latest - x64	6m 1s
Julia 1 - macOS-latest - x64	6m 20s
Julia 1 - windows-latest - x64	6m 36s
Julia nightly - ubuntu-latest - x64	6m 2s
Julia nightly - macOS-latest - x64	6m 36s
Julia nightly - windows-latest - x64	7m 7s
	1h 1m 59s

Provide feedback