type Mapper struct {
	runtime.ObjectTyper
	meta.RESTMapper
	//***定义在/pkg/kubectl/resource/interfaces.go中***//
	//***ClientMapper可以根据config和mapping通过调用ClientForMapping()生成RESTClient***//
	ClientMapper
	runtime.Decoder
}

// Info contains temporary info to execute a REST call, or show the results
// of an already completed REST call.
//***Info用来存储REST的返回结果***//
type Info struct {
	Client    RESTClient
	Mapping   *meta.RESTMapping
	Namespace string
	Name      string
	// Optional, Source is the filename or URL to template file (.json or .yaml),
	// or stdin to use to handle the resource
	Source string
	// Optional, this is the provided object in a versioned type before defaulting
	// and conversions into its corresponding internal type. This is useful for
	// reflecting on user intent which may be lost after defaulting and conversions.
	VersionedObject interface{}
	// Optional, this is the most recent value returned by the server if available
	runtime.Object
	// Optional, this is the most recent resource version the server knows about for
	// this type of resource. It may not match the resource version of the object,
	// but if set it should be equal to or newer than the resource version of the
	// object (however the server defines resource version).
	ResourceVersion string
	// Optional, should this resource be exported, stripped of cluster-specific and instance specific fields
	Export bool
}

type Visitor interface {
	Visit(VisitorFunc) error
}
type VisitorFunc func(*Info, error) error