First commit

DaSaSo.Domain/DaSaSo.Domain.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

DaSaSo.Domain/Model/Client.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.Domain.Model
+{
+    public class Client : DomainObject
+    {
+        public string Firstname { get; set; }
+        public string LastName { get; set; }
+    }
+}

DaSaSo.Domain/Model/DomainObject.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.Domain.Model
+{
+    public class DomainObject
+    {
+        public int Id { get; set; }
+    }
+}

DaSaSo.Domain/Model/Project.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.Domain.Model
+{
+    public class Project : DomainObject
+    {
+        public string Name {  get; set; }
+        public Client Client { get; set; }
+    }
+}

DaSaSo.Domain/Services/IDataService.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.Domain.Service
+{
+    public interface IDataService<T>
+    {
+        Task<IEnumerable<T>> GetAll();
+        Task<T> Get(int id);
+        Task<T> Create(T entity);
+        Task<T> Update(int id, T entity);
+        Task<bool> Delete(int id);
+    }
+}