message: Add a comment on why we need SkipTestIfTestSrcDirIsNotSet.
diff: @@ -25,6 +25,8 @@ import (
  )
  // SkipTestIfTestSrcDirIsNotSet skips the test if TEST_SRCDIR is not set.
  +// This is necessary when not using Blaze/Bazel, as we don't have a solution for referencing non-Go
  +// resources that are external to the repository with Go tooling.
  func SkipTestIfTestSrcDirIsNotSet(t *testing.T) {
  t.Helper()
  if _, ok := os.LookupEnv("TEST_SRCDIR"); !ok {
  