✅ How should I use SelectAsync?

static public async Task<IEnumerable<TResult>> SelectAsync<TSource, TResult>(
    this IEnumerable<TSource> @this,                                         
    Func<TSource, Task<TResult>> selector) =>                                
    await Task.WhenAll(@this.Select(async x => await selector(x)             
            .ConfigureAwait(continueOnCapturedContext: false)))              
        .ConfigureAwait(continueOnCapturedContext: false); 

1.
public Task<List<ReportDefinitionDto>> ToDtos(        
    IEnumerable<ReportDefinitionModel> models,        
    CultureInfo culture) =>                           
    models.SelectAsync(model => ToDto(model, culture))
        .ToList();    

2.
public Task<List<ReportDefinitionDto>> ToDtos(        
    IEnumerable<ReportDefinitionModel> models,        
    CultureInfo culture) =>                           
    models.SelectAsync(async model => await ToDto(model, culture))
        .ToList();