}
	return nil
}

func getLastComment(n ast.Node) *ast.CommentGroup {
	switch n := n.(type) {
	case *ast.Field:
		return n.Comment
	case *ast.ImportSpec:
		return n.Comment
	case *ast.ValueSpec:
		return n.Comment
	case *ast.TypeSpec:
		return n.Comment
	case *ast.GenDecl:
		if len(n.Specs) > 0 {
			return getLastComment(n.Specs[len(n.Specs)-1])
		}
	case *ast.File: