Create blazor component based on InputBase with interface

Question

I need to create a Blazor component inherited from the Microsoft.AspNetCore.Components.Forms.InputBase class that implements an interface.

My interface is realised with this code :

 public interface Person
{
    public Guid Id { get; set; }
    public string Name { get; set; }
    public string FirstName { get; set; }

}

And my class who inherit of interface is

  public class Child : Person
{
    private Guid id; 
    private string name;
    private string firstName;

    public Guid Id { get => id; set => id = value; }
    public string Name { get => name ; set => name = value; }
    public string FirstName { get => firstName; set => firstName = value; }

    public Child(string name, string firstname)
    {
        this.name = name;
        this.firstName = firstname;
    }
}

For my component this inherit of InputBase is declared with :

@inherits Microsoft.AspNetCore.Components.Forms.InputBase<Person?>

For use my component in blazor page, I have used the code below :

<MyTest @bind-Value="@child" />

When I generate my solution, I have an error :

Error CS1503 Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<Test.Children>' to 'Microsoft.AspNetCore.Components.EventCallback'

Can you help me understand this mistake? Do I need to create a specific getter/setter to transform the Child into a Person or is there another solution?

Thanks for your help ! Vincent