This function is also generally useful for readTree consumers that
have the concept of subtargets.
Change-Id: Ic7fc03380dec6953fb288763a28e50ab3624d233
I think it’s solid enough to use in a wider context.
Change-Id: If53e8bbb6b90fa88d73fb42730db470e822ea182
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3055
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>