Missing IModel in Microsoft.EntityFrameworkCore.Internal

With Microsoft.EntityFrameworkCore, Version=3.1.8.0, I can use Model as: context.Model.FindEntityType. But with version 6.0.0, I cannot use it anymore.

When I check assembly, it's difference as below, I can't see IModel in version 6:

1. Version 3.1.8:

Assembly Microsoft.EntityFrameworkCore, Version=3.1.8.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
using Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
using Microsoft.EntityFrameworkCore.Diagnostics;
using Microsoft.EntityFrameworkCore.Metadata;
using Microsoft.EntityFrameworkCore.Query.Internal;

namespace Microsoft.EntityFrameworkCore.Internal
{
    public interface IDbContextDependencies
    {
        IModel Model { get; }
        IDbSetSource SetSource { get; }
        IEntityFinderFactory EntityFinderFactory { get; }
        IAsyncQueryProvider QueryProvider { get; }
        IStateManager StateManager { get; }

2. Version 6.0.0:

Assembly Microsoft.EntityFrameworkCore, Version=6.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60

using Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
using Microsoft.EntityFrameworkCore.Diagnostics;
using Microsoft.EntityFrameworkCore.Query;

namespace Microsoft.EntityFrameworkCore.Internal
{
    public interface IDbContextDependencies
    {
        IDbSetSource SetSource
        {
            get;
        }
        IEntityFinderFactory EntityFinderFactory
        {
            get;
        }
        IAsyncQueryProvider QueryProvider
        {
            get;
        }

Please advise.