HttpClient To Get List With Async/Await Operation

I'm trying to get a list from a web api which I've written before. Then I'll use that list in Xamarin.Forms ListView. My code is here:

public static class DataSource
{

    public static async Task<Restoran[]> GetRestoransAsync()
    {
        // ... Use HttpClient.
        using (HttpClient client = new HttpClient())
        using (HttpResponseMessage response = await client.GetAsync(page))
        using (HttpContent content = response.Content)
        {
            // ... Read the string.
            string result = await content.ReadAsStringAsync();

            var restorans = JsonConvert.DeserializeObject<Restoran[]>(result);
            return restorans;
        }

    }

}

My ContentPage:

public class MenuPage : ContentPage
{
    ListView listView;
    List<Restoran> restorans = new List<Restoran>();
    async Task LoadRestorans()
    {
        restorans = (await DataSource.GetRestoransAsync()).ToList();
    }

    public MenuPage(string masa)
    {
        var loadData = LoadRestorans();
        loadData.Wait();
        listView = new ListView(ListViewCachingStrategy.RecycleElement)
        {
        ItemsSource = restorans,
            ItemTemplate = new DataTemplate(() => {
                var nativeCell = new CustomCell();
                return nativeCell;
            })
        };
    }
}

But when I debugged this code, "LoadRestorans()" method has called just before initialization of "restorans" list. I think I don't understand the mentality of async methods. What should I do?