/// <summary>
/// Retrieves a paged result on the current <see cref="GetValidEntities" /> asynchronously.
/// </summary>
/// <param name="request">The paged request to use.</param>
/// <param name="ctx">The context or <c>null</c> if a new should be created.</param>
/// <param name="query">An optional query on the entities to use (if <c>null</c>, GetValidEntities is used).</param>
/// <param name="filter">An optional filter expression.</param>
/// <returns>The paged result.</returns>
public async Task <PagedResult <TEntity, TContext> > GetPagedResultAsync(
PagedRequest request,
TContext ctx = null,
IQueryable <TEntity> query = null,
Expression <Func <TEntity, bool> > filter = null)
{
return(await ExecuteContextWrappedAsync(async c => await PagedResult <TEntity, TContext> .GetResultAsync(request, c, query, filter, this), ctx));
}
