con := &ProxyConnection{
		conID:             connectionNumber.Inc(),
		upstreamError:     make(chan error), // can be produced by recv and send
		downstreamError:   make(chan error), // can be produced by recv and send
		deltaRequestsChan: channels.NewUnbounded[*discovery.DeltaDiscoveryRequest](),

// inadvertently copy a lock, by checking whether
// its receiver, parameters, or return values
// are locks.
func checkCopyLocksFunc(pass *analysis.Pass, name string, recv *ast.FieldList, typ *ast.FuncType) {
	if recv != nil && len(recv.List) > 0 {
		expr := recv.List[0].Type
		if path := lockPath(pass.Pkg, pass.TypesInfo.Types[expr].Type, nil); path != nil {
			pass.ReportRangef(expr, "%s passes lock by value: %v", name, path)
		}
	}

	}()

	// Receive first or second connection.
	s, err := recv(ln, true)
	if err != nil {
		t.Fatalf("recv failed: %v", err)
	}
	switch s {
	case "":
		// First connection data is received, let's get second connection data.
	case "abc":
		// First connection is lost forever, but that is ok.
		return
	default:
		t.Fatalf(`"%s" received from recv, but "" or "abc" expected`, s)
	}

// expression "recv.sym".
func NewMethodExpr(pos src.XPos, recv *types.Type, sym *types.Sym) *ir.SelectorExpr {
	// Compute the method set for recv.
	var ms []*types.Field
	if recv.IsInterface() {
		ms = recv.AllMethods()
	} else {
		mt := types.ReceiverBaseType(recv)
		if mt == nil {
			base.FatalfAt(pos, "type %v has no receiver base type", recv)
		}
		CalcMethods(mt)

			mpos := r.pos()
			mname := r.ident()

			// TODO(mdempsky): Matches bimport.go, but I
			// don't agree with this.
			var recv *types.Var
			if base != nil {
				recv = types.NewVar(token.NoPos, r.currPkg, "", base)
			}

			msig := r.signature(recv, nil, nil)
			methods[i] = types.NewFunc(mpos, r.currPkg, mname, msig)
		}

		typ := types.NewInterfaceType(methods, embeddeds)

	}
}

func (r *resolver) walkRecv(recv *ast.FieldList) {
	// If our receiver has receiver type parameters, we must declare them before
	// trying to resolve the rest of the receiver, and avoid re-resolving the
	// type parameter identifiers.
	if recv == nil || len(recv.List) == 0 {
		return // nothing to do
	}
	typ := recv.List[0].Type
	if ptr, ok := typ.(*ast.StarExpr); ok {
		typ = ptr.X
	}

	con := &ProxyConnection{
		conID:           connectionNumber.Inc(),
		upstreamError:   make(chan error), // can be produced by recv and send
		downstreamError: make(chan error), // can be produced by recv and send
		// Requests channel is unbounded. The Envoy<->XDS Proxy<->Istiod system produces a natural
		// looping of Recv and Send. Due to backpressure introduced by gRPC natively (that is, Send() can

				hasTParamError := false                           // avoid duplicate type parameter errors
				if d.decl.Recv.NumFields() == 0 {
					// regular function
					if d.decl.Recv != nil {
						check.error(d.decl.Recv, BadRecv, "method has no receiver")
						// treat as function
					}
					if name == "init" || (name == "main" && check.pkg.name == "main") {

		// in fact, FuncDecl.Recv precedes FuncDecl.Type.Func.
		//
		// As a workaround, we inline the case for FuncType
		// here and order things correctly.
		//
		children = nil // discard ast.Walk(FuncDecl) info subtrees
		children = append(children, tok(n.Type.Func, len("func")))
		if n.Recv != nil {
			children = append(children, n.Recv)
		}
		children = append(children, n.Name)

	f := typeutil.StaticCallee(info, call)
	if f == nil || f.Name() != method {
		return false
	}
	recv := f.Type().(*types.Signature).Recv()
	if recv == nil {
		return false
	}

	// Check that the receiver is a <pkgPath>.<typeName> or
	// *<pkgPath>.<typeName>.
	_, named := typesinternal.ReceiverNamed(recv)
	return analysisutil.IsNamedType(named, pkgPath, typeName)