OpenApiSchema copy constructor does not copy Extensions #1261

using Microsoft.OpenApi.Any;
using Microsoft.OpenApi.Models;

var schema = new OpenApiSchema
{
    Extensions =
    {
        { "x-myextension", new OpenApiInteger(42) }
    }
};

var schemaCopy = new OpenApiSchema(schema);

if (schemaCopy.Extensions.Count != 1)
    Console.WriteLine("Extensions were not copied");