You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: code_cover_on.go
    path of file: ./repos/cockroach/pkg/testutils/bazelcodecover
    
    the code of the file until where you have to start completion: // Copyright 2023 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change
    
func MaybeInitCodeCoverage() {
	// Go 1.20 adds binary instrumentation for integration tests [1]. However, we
	// can't yet build in this mode through bazel (tracked in [2]).
	//
	// Instead, we hack into Bazel's coverage infrastructure and set up an exit
	// hook to dump the counters. The approach follows Go's implementation (see
	// [3]).
	//
	// [1] https://go.dev/testing/coverage/
	// [2] https://github.com/bazelbuild/rules_go/issues/3513
	// [3] https://github.com/golang/go/blob/dfbf809f2af753db69537a9431d6419142dfe80b/src/runtime/coverage/hooks.go

	dir := os.Getenv("BAZEL_COVER_DIR")
	if dir == "" {
		fmt.Fprintln(os.Stderr, "warning: BAZEL_COVER_DIR not set, no coverage data emitted")
		return
	}
	runtime_addExitHook(func() { emitCoverageCounters(dir) }, true /* runOnNonZeroExit */)
}