config

type Config interface {

	// Init the config
	Init(opts ...Option) error
	// Options in the config
	Options() Options
	// Stop the config loader/watcher
	Close() error
	// Load config sources
	Load(opts ...Option) error
	// Force a source changeset sync
	Sync() error

	Get(key string) (string, bool)              //获取参数， 后续可返回values
	Walk(f func(key string, value string) bool) //遍历参数,并执行操作处理函数

}

type Option func(*Options)

type Options struct {
	Context context.Context
	// contains filtered or unexported fields
}

type VConfig struct {
	// contains filtered or unexported fields
}