r.p.ifaces = append(r.p.ifaces, iface)

	return iface
}

func (r *reader) signature(recv *types.Var, rtparams, tparams []*types.TypeParam) *types.Signature {
	r.Sync(pkgbits.SyncSignature)

	params := r.params()
	results := r.params()
	variadic := r.Bool()

	return types.NewSignatureType(recv, rtparams, tparams, params, results, variadic)
}

func (r *reader) params() *types.Tuple {

		}
		return ""

	case *ast.FuncDecl:
		// Formats func declarations.
		name := n.Name.Name
		recv := pkg.oneLineNodeDepth(n.Recv, depth)
		if len(recv) > 0 {
			recv = "(" + recv + ") "
		}
		fnc := pkg.oneLineNodeDepth(n.Type, depth)
		fnc = strings.TrimPrefix(fnc, "func")
		return fmt.Sprintf("func %s%s%s", recv, name, fnc)

	case *ast.TypeSpec:
		sep := " "
		if n.Assign.IsValid() {
			sep = " = "
		}

    communication via send/recvs). In this case, users of ParallelExecute op
    must provide correct control dependencies between regions to guarantee
    correctness. Regions in ParallelExecute may include Resource ops.

    In the case where different regions include ops access the same resource,
    the users of the ParallelExecute op must provide mechanism (via send/recvs

		}
		walkBeforeAfter(&n.Type, before, after)

	case *ast.BadDecl:
	case *ast.GenDecl:
		walkBeforeAfter(&n.Specs, before, after)
	case *ast.FuncDecl:
		if n.Recv != nil {
			walkBeforeAfter(&n.Recv, before, after)
		}
		walkBeforeAfter(&n.Type, before, after)
		if n.Body != nil {
			walkBeforeAfter(&n.Body, before, after)
		}

	case *ast.File:

				base.Fatalf("unknown op in select %v", r.Op())

			case ir.OSELRECV2:
				// case x, ok = <-c
				r := r.(*ir.AssignListStmt)
				recv := r.Rhs[0].(*ir.UnaryExpr)
				recv.X = o.expr(recv.X, nil)
				if !ir.IsAutoTmp(recv.X) {
					recv.X = o.copyExpr(recv.X)
				}
				init := ir.TakeInit(r)

				colas := r.Def
				do := func(i int, t *types.Type) {
					n := r.Lhs[i]
					if ir.IsBlank(n) {

		// are rare.)
		name := ""
		if len(params) > 0 && params[0].name != "" {
			// name needed
			name = sig.recv.name
			if name == "" {
				name = "_"
			}
		}
		params = append([]*Var{NewVar(sig.recv.pos, sig.recv.pkg, name, x.typ)}, params...)
		x.mode = value
		x.typ = &Signature{
			tparams:  sig.tparams,
			params:   NewTuple(params...),
			results:  sig.results,

			} else {
				def = ncase
			}
		} else {
			n := Stmt(ncase.Comm)
			ncase.Comm = n
			oselrecv2 := func(dst, recv ir.Node, def bool) {
				selrecv := ir.NewAssignListStmt(n.Pos(), ir.OSELRECV2, []ir.Node{dst, ir.BlankNode}, []ir.Node{recv})
				selrecv.Def = def
				selrecv.SetTypecheck(1)
				selrecv.SetInit(n.Init())
				ncase.Comm = selrecv
			}
			switch n.Op() {
			default:

 func (v <type 1>) OverflowInt (x <type -4>) <type -15>;
 func (v <type 1>) OverflowUint (x <type -8>) <type -15>;
 func (v <type 1>) Pointer () <type -13>;
 func (v <type 1>) Recv () (x <type 1>, ok <type -15>);
 func (v <type 1>) .reflect.recv (nb <type -15>) (val <type 1>, ok <type -15>);
 func (v <type 1>) Send (x <type 1>);
 func (v <type 1>) .reflect.send (x <type 1>, nb <type -15>) (selected <type -15>);

		// are rare.)
		name := ""
		if len(params) > 0 && params[0].name != "" {
			// name needed
			name = sig.recv.name
			if name == "" {
				name = "_"
			}
		}
		params = append([]*Var{NewVar(sig.recv.pos, sig.recv.pkg, name, x.typ)}, params...)
		x.mode = value
		x.typ = &Signature{
			tparams:  sig.tparams,
			params:   NewTuple(params...),
			results:  sig.results,

fs.s3a.max.total.tasks=2048 # Maximum number of parallel tasks
fs.s3a.multipart.size=512M # Size of each multipart chunk
fs.s3a.multipart.threshold=512M # Size before using multipart uploads
fs.s3a.socket.recv.buffer=65536 # Read socket buffer hint
fs.s3a.socket.send.buffer=65536 # Write socket buffer hint
fs.s3a.threads.max=2048 # Maximum number of threads for S3A
```