func (pr *pkgReader) later(fn func()) {
	pr.laterFns = append(pr.laterFns, fn)
}

// readUnifiedPackage reads a package description from the given
// unified IR export data decoder.
func readUnifiedPackage(fset *token.FileSet, ctxt *types.Context, imports map[string]*types.Package, input pkgbits.PkgDecoder) *types.Package {
	pr := pkgReader{
		PkgDecoder: input,

		fake: fakeFileSet{
			fset:  fset,
			files: make(map[string]*fileInfo),

The chapter on <<ant#ant,Ant integration>> has examples that use both `<path>` and `<fileset>`.
There is also link:{javadocPath}/org/gradle/api/file/FileCollection.html#addToAntBuilder-java.lang.Object-java.lang.String-org.gradle.api.file.FileCollection.AntType-[a method on `FileCollection`] that will convert a file collection to a fileset or similar Ant type.
--

[[migant:properties]]
== Migrating Ant properties

	doc         *doc.Package
	build       *build.Package
	typedValue  map[*doc.Value]bool // Consts and vars related to types.
	constructor map[*doc.Func]bool  // Constructors.
	fs          *token.FileSet      // Needed for printing.
	buf         pkgBuffer
}

func (pkg *Package) ToText(w io.Writer, text, prefix, codePrefix string) {
	d := pkg.doc.Parser().Parse(text)
	pr := pkg.doc.Printer()
	pr.TextPrefix = prefix

	const w = 1        // defs w
        x, y := 2, 3       // defs x, y
        w, x, z := 4, 5, 6 // uses w, x, defs z; error: cannot assign to w
        _, _, _ = x, y, z  // uses x, y, z
}
`
	// We need a specific fileset in this test below for positions.
	// Cannot use typecheck helper.
	fset := token.NewFileSet()
	f := mustParse(fset, src)

	const want = `L3 defs func p._()
L4 defs const w untyped int
L5 defs var x int

	counterVar string
}

// File is a wrapper for the state of a file used in the parser.
// The basic parse tree walker is a method of this type.
type File struct {
	fset    *token.FileSet
	name    string // Name of file.
	astFile *ast.File
	blocks  []Block
	content []byte
	edit    *edit.Buffer
	mdb     *encodemeta.CoverageMetaDataBuilder
	fn      Func
	pkg     *Package
}