Find System.Linq.Queryable.Where<TSource> by reflection

reflection.cs

public static class A
{
    private static MethodInfo WhereMethodInfo()
    {
        var tSource = typeof(Queryable)
            .GetMethods()
            .Where(m => m.Name == nameof(Queryable.Where))
            .First()
            .GetGenericArguments()[0];

        var methodInfo = typeof(Queryable)
            .GetMethod(
                name: "Where",
                genericParameterCount: 1,
                bindingAttr: BindingFlags.Static | BindingFlags.Public,
                types: [typeof(IQueryable<>).MakeGenericType(tSource), typeof(Expression<>).MakeGenericType(typeof(Func<,>).MakeGenericType(tSource, typeof(bool)))]);

        return methodInfo ?? throw new UnreachableException("Cannot find System.Linq.Where<TSource>");
    }
}