code: func (m *Meta) fieldsMap() map[string]interface{} {
  	return map[string]interface{}{
  		"config_service_host": &m.ConfigServiceHost,
  		"config_dir":          &m.ConfigDir,
  		"tracked_files":       &m.TrackedFiles,
  		"fail_on_warnings":    &m.FailOnWarnings,
  	}
  }
docs: // fieldsMap returns a mapping from a snake_case name of a field to a pointer to
  // this field inside 'm'.
  //
  // This is used by both Starlark accessors and for processing CLI flags.