code: func (config *DirectClientConfig) getClusterName() (string, bool) {
  	if len(config.overrides.Context.Cluster) != 0 {
  		return config.overrides.Context.Cluster, true
  	}
  	context, _ := config.getContext()
  	return context.Cluster, false
  }
docs: // getClusterName returns a string containing the default, or user-set cluster name, and a boolean
  // indicating whether the default clusterName has been overwritten by a user-set flag, or left as
  // its default value