func (config *directClientConfig) ConfirmUsable() error {
	var validationErrors []error
	validationErrors = append(validationErrors, validateAuthInfo(config.getAuthInfoName(), config.getAuthInfo())...)
	validationErrors = append(validationErrors, validateClusterInfo(config.getClusterName(), config.getCluster())...)
	// when direct client config is specified, and our only error is that no server is defined, we should
	// return a standard "no config" error
	if len(validationErrors) == 1 && validationErrors[0] == errEmptyCluster {
		return newErrConfigurationInvalid([]error{errEmptyConfig})
	}
	return newErrConfigurationInvalid(validationErrors)
}
func (config *directClientConfig) ConfirmUsable() error {
	var validationErrors []error
	validationErrors = append(validationErrors, validateAuthInfo(config.getAuthInfoName(), config.getAuthInfo())...)
	validationErrors = append(validationErrors, validateClusterInfo(config.getClusterName(), config.getCluster())...)
	// when direct client config is specified, and our only error is that no server is defined, we should
	// return a standard "no config" error
	if len(validationErrors) == 1 && validationErrors[0] == errEmptyCluster {
		return newErrConfigurationInvalid([]error{errEmptyConfig})
	}
	return newErrConfigurationInvalid(validationErrors)
}
// ConfirmUsable is a modified copy of k8s.io/kubernetes/pkg/client/unversioned/clientcmd.DirectClientConfig.ConfirmUsable.
// ConfirmUsable looks a particular context and determines if that particular part of the config is useable.  There might still be errors in the config,
// but no errors in the sections requested or referenced.  It does not return early so that it can find as many errors as possible.