How to use the @glimmer/vm.Op.ChildScope function in @glimmer/vm

ReferenceCache,
  Revision,
  Tag
} from '@glimmer/reference';
import { initializeGuid, assert } from '@glimmer/util';
import { expectStackChange, CheckNumber, check, CheckInstanceof, CheckOption, CheckBlockSymbolTable, CheckHandle, CheckPrimitive } from '@glimmer/debug';
import { stackAssert } from './assert';
import { APPEND_OPCODES, UpdatingOpcode } from '../../opcodes';
import { PrimitiveReference } from '../../references';
import { CompilableTemplate } from '../../syntax/interfaces';
import { VM, UpdatingVM } from '../../vm';
import { Arguments } from '../../vm/arguments';
import { LazyConstants, PrimitiveType } from "@glimmer/program";
import { CheckReference } from './-debug-strip';

APPEND_OPCODES.add(Op.ChildScope, vm => vm.pushChildScope());

APPEND_OPCODES.add(Op.PopScope, vm => vm.popScope());

APPEND_OPCODES.add(Op.PushDynamicScope, vm => vm.pushDynamicScope());

APPEND_OPCODES.add(Op.PopDynamicScope, vm => vm.popDynamicScope());

APPEND_OPCODES.add(Op.Constant, (vm: VM & { constants: LazyConstants }, { op1: other }) => {
  vm.stack.push(vm.constants.getOther(other));
});

APPEND_OPCODES.add(Op.Primitive, (vm, { op1: primitive }) => {
  let stack = vm.stack;
  let flag = primitive & 7; // 111
  let value = primitive >> 3;

check,
  CheckInstanceof,
  CheckOption,
  CheckBlockSymbolTable,
  CheckHandle,
  CheckPrimitive,
} from '@glimmer/debug';
import { stackAssert } from './assert';
import { APPEND_OPCODES, UpdatingOpcode, OpcodeKind } from '../../opcodes';
import { PrimitiveReference } from '../../references';
import { UpdatingVM } from '../../vm';
import { LazyConstants, PrimitiveType } from '@glimmer/program';
import { CheckReference, CheckScope } from './-debug-strip';
import { CONSTANTS } from '../../symbols';

APPEND_OPCODES.add(Op.ChildScope, vm => vm.pushChildScope(), OpcodeKind.Mut);

APPEND_OPCODES.add(Op.PopScope, vm => vm.popScope(), OpcodeKind.Mut);

APPEND_OPCODES.add(Op.PushDynamicScope, vm => vm.pushDynamicScope(), OpcodeKind.Mut);

APPEND_OPCODES.add(Op.PopDynamicScope, vm => vm.popDynamicScope(), OpcodeKind.Mut);

APPEND_OPCODES.add(
  Op.Constant,
  (vm, { op1: other }) => {
    vm.stack.push((vm[CONSTANTS] as LazyConstants).getOther(other));
  },
  OpcodeKind.Mut
);

APPEND_OPCODES.add(