What is the problem?
We now autogenerate metrics and their metadata with the script in generation/generate_metrics.go. This is helpful but you need to remember to run the script if you modify the metrics.
What is the solution?
We should run go generate on the pre-commit hook if statistician/statistician.go, statistician/metrics.go or generation/generate_metrics.go are in the staging area and then autoformat the resulting generation/metrics.generated.go file.