throw new InvalidObjectException("Use SerializedForm");
  }

  // This class is never actually serialized directly, but we have to make the
  // warning go away (and suppressing would suppress for all nested classes too)
  private static final long serialVersionUID = 0;

  /**
   * Not supported. Use {@link #toImmutableSortedMap}, which offers better type-safety, instead.

	}
}

func TestInstantiateConcurrent(t *testing.T) {
	const src = `package p

type I[P any] interface {
	m(P)
	n() P
}

type J = I[int]

type Nested[P any] *interface{b(P)}

type K = Nested[string]
`
	pkg := mustTypecheck(src, nil, nil)

	insts := []*Interface{
		pkg.Scope().Lookup("J").Type().Underlying().(*Interface),

    // CHECK: tf_executor.fetch
    tf_executor.fetch
  }
  // CHECK: return
  func.return
}

// -----

!tf_res = tensor<!tf_type.resource<tensor<f32>>>

// Test nested while ops.

// CHECK-LABEL: func @nested_loop_while_body_inner

		colon := p.pos
		p.next()
		if label, isIdent := x[0].(*ast.Ident); labelOk && isIdent {
			// Go spec: The scope of a label is the body of the function
			// in which it is declared and excludes the body of any nested
			// function.
			stmt := &ast.LabeledStmt{label, colon, p.parseStmt()}
			p.declare(stmt, p.labelScope, ast.Lbl, label)
			return stmt
		}
		p.error(x[0].Pos(), "illegal label declaration")

				// v2 = OpConst64 [7]
				// v3 = OpConst64 [42]
				//
				// v4 = OpPhi(v1, v2, v3)
				//
				// We can prove:
				//
				// v4 >= 7 && v4 <= 42
				//
				// TODO(jake-ciolek): Handle nested constant OpPhi's
				sameConstOp := true
				min := 0
				max := 0

				if !v.Args[min].isGenericIntConst() {
					break
				}

				for k := range v.Args {

	"field":   "The field of the resource that has caused this error, as named by its JSON serialization. May include dot and postfix notation for nested attributes. Arrays are zero-indexed.  Fields may appear more than once in an array of causes due to fields having multiple errors. Optional.\n\nExamples:\n  \"name\" - the field \"name\" on the current resource\n  \"items[0].name\" - the field \"name\"...

  // +optional
  optional string message = 2;

  // The field of the resource that has caused this error, as named by its JSON
  // serialization. May include dot and postfix notation for nested attributes.
  // Arrays are zero-indexed.  Fields may appear more than once in an array of
  // causes due to fields having multiple errors.
  // Optional.
  //
  // Examples:

  // +optional
  optional string message = 2;

  // The field of the resource that has caused this error, as named by its JSON
  // serialization. May include dot and postfix notation for nested attributes.
  // Arrays are zero-indexed.  Fields may appear more than once in an array of
  // causes due to fields having multiple errors.
  // Optional.
  //
  // Examples:

	}

	return p.binaryExpr(nil, 0)
}

// Expression = UnaryExpr | Expression binary_op Expression .
func (p *parser) binaryExpr(x Expr, prec int) Expr {
	// don't trace binaryExpr - only leads to overly nested trace output

	if x == nil {
		x = p.unaryExpr()
	}
	for (p.tok == _Operator || p.tok == _Star) && p.prec > prec {
		t := new(Operation)
		t.pos = p.pos()
		t.Op = p.op
		tprec := p.prec

	//	frame 5's panic starts running defers
	//	frame 6, running d4, garbage collects
	//	frame 6, running d2, garbage collects
	//
	// During the execution of d4, the panic stack is d4 -> d3, which
	// is nested properly, and we'll treat frame 3 as resumable, because we
	// can find d3. (And in fact frame 3 is resumable. If d4 recovers
	// and frame 5 continues running, d3, d3 can recover and we'll