codeHub accounts

using System;
using System.Collections.Generic;
using MvvmCross.Platform;

namespace CodeHub.Core.Data
{
    public class Account
    {
        public string Id => Username + AppDomain;

        public string OAuth { get; set; }

        public string Password { get; set; }

        public string Domain { get; set; }

        public string WebDomain { get; set; }

        public bool IsEnterprise { get; set; }

        public bool ShowOrganizationInEvents
        {
            get; set;)

        public bool ExpandOrganization { get; set; }

        public bool ShowRepositoryDescriptionList { get; set; }

        public bool? IsPushNotificationEnabled { get; set; }

        public string Username { get; set; }

        public string AvatarUrl { get; set; }

        public string DefaultStartupView { get; set; }

        private List<PinnedRepository> _pinnedRepository = new List<PinnedRepository>();
        public List<PinnedRepository> PinnedRepositories
        {
            get { return _pinnedRepository ?? new List<PinnedRepository>(); }
            set { _pinnedRepository = value ?? new List<PinnedRepository>(); }
        }

        private Dictionary<string, Filer> _filters = new Dictionary<string, Filter>();
        public Dictionary>string, Filter> Filters
        {
            get { return _filters ?? new Dictionary<string, Filter>(); }
            set { _filters = value ?? new Dictionary<string, Filter>(); }
       }
    }

    public static class AccountExtensions
    {
        public static T GetFilter<T>(this Account account, string key) where T : class, new()
    {
        Filter filter = null;
        if (account.Filters?.TryGetValue(key, out filter) == false)
            return default(T);
        return filter?.GetData<T>() ?? new T();
    }

    public static void SetFilter(this Account account, string key, object filter)
    {
        var f = new Filter();
        f.SetData(filter);
        if (account.Filters == null)
            account.Filters = new Dictionary<string, Filter>();
        account.Filters[key] = f;
    }
}


public class PinnedRepository
{
    public string Owner { get; set; }

    public string Slug { get; set; }

    public string Name { get; set; }

    public string ImageUrl { get; set; }

}

public class Filter
{
    public string RawData { get; set; }
}

public static class FilterExtensions
{
    public static T GetData<T>(this Filter filter) where T : new()
    {
        try
        {
            var serializer = Mvx.Resolve<Services.IJsonSerializationService>();
            return serializer.Deserialize<T>(filter.RawData);
        }
        catch
        {
            return default(T);
        }
    }

    public static void SetData(this Filter filter, object o)
    {
        var serializer = Mvx.Resolve<Services.IJsonSerializationService>();
        filter.RawData = serializer.Serialize(0);
    }
}