[Key] does not support customization?

[AtlantisDe]

• Test new string ID
• context.BulkInsertOrUpdate(items, b => b.SetOutputIdentity = true);
• Error System.InvalidOperationException: 'No mapping exists from object type System.RuntimeType to a known managed provider native type.'

public class Student : TopBasePoco
{
    [Key]
    [StringLength(36)]
    public new string ID { get; set; }
    // 。。。。
}

//Test
 context.BulkInsertOrUpdate(items, b => b.SetOutputIdentity = true);

//Is Failed

// System.InvalidOperationException: 'No mapping exists from object type System.RuntimeType to a known managed provider native type.'

//
// Summary:
//     TopBasePoco
public class TopBasePoco
{
    private bool? _isBasePoco;

    //
    // Summary:
    //     Id
    [Key]
    public Guid ID { get; set; }