const golang.org/x/tools/go/ast/edge.Invalid

4 uses

	golang.org/x/tools/go/ast/edge (current package)
		edge.go#L20: 	if k == Invalid {
		edge.go#L58: 	Invalid Kind = iota // for nodes at the root of the traversal
		edge.go#L194: 	Invalid:               {},

	golang.org/x/tools/go/ast/inspector
		inspector.go#L248: 		walk(v, edge.Invalid, -1, file)