ResultType reflect.Type

	// FactTypes indicates that this analyzer imports and exports
	// Facts of the specified concrete types.
	// An analyzer that uses facts may assume that its import
	// dependencies have been similarly analyzed before it runs.
	// Facts must be pointers.
	//
	// FactTypes establishes a "vertical" dependency between

		Doc              string
		Flags            flag.FlagSet
		Run              func(*Pass) (interface{}, error)
		RunDespiteErrors bool
		ResultType       reflect.Type
		Requires         []*Analyzer
		FactTypes        []Fact
	}

The Flags field declares a set of named (global) flag variables that
control analysis behavior. Unlike vet, analysis flags are not declared

	var registerFacts func(a *analysis.Analyzer) bool
	registerFacts = func(a *analysis.Analyzer) bool {
		act, ok := actions[a]
		if !ok {
			act = new(action)
			var usesFacts bool
			for _, f := range a.FactTypes {
				usesFacts = true
				gob.Register(f)
			}
			for _, req := range a.Requires {
				if registerFacts(req) {
					usesFacts = true
				}
			}
			act.usesFacts = usesFacts
			actions[a] = act

	URL:        "https://pkg.go.dev/golang.org/x/tools/go/analysis/passes/printf",
	Requires:   []*analysis.Analyzer{inspect.Analyzer},
	Run:        run,
	ResultType: reflect.TypeOf((*Result)(nil)),
	FactTypes:  []analysis.Fact{new(isWrapper)},
}

// Kind is a kind of fmt function behavior.
type Kind int

const (
	KindNone   Kind = iota // not a fmt wrapper function