AddLicenseHeaders adds license headers.

Check formats code, updates generated content, check for common errors, and checks for any modified files.

CheckLicenseHeaders checks license headers.

Clean cleans all generated files and build artifacts.

DumpVariables writes the template variables and values to stdout.

Fmt formats source code (.go and .py) and adds license headers.

PackageSystemTests packages the python system tests results.

RegisterCheckDeps registers dependencies of the Check target.