diff --git a/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.Logic.GetService.cs b/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.Logic.GetService.cs
index d274802..12d2307 100644
--- a/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.Logic.GetService.cs
+++ b/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.Logic.GetService.cs
@@ -24,8 +24,17 @@ private void ShouldGetService()
             ServiceDescriptor inputServiceDescriptor = randomServiceDescriptor;
             ServiceDescriptor expectedServiceDescriptor = inputServiceDescriptor;
 
-            DependencyInjection inputDependencyInjection = inputProperties.DependencyInjection;
-            inputDependencyInjection.ServiceCollection.Add(inputServiceDescriptor);
+
+            IServiceCollection inputServiceCollection = inputProperties.DependencyInjection.ServiceCollection;
+            inputServiceCollection.Add(inputServiceDescriptor);
+
+            DependencyInjection inputDependencyInjection =
+                new DependencyInjection
+                {
+                    ServiceCollection = inputServiceCollection,
+                    ServiceProvider = inputServiceCollection.BuildServiceProvider()
+                };
+
             Type implementationType = randomProperties.ImplementationType;
 
             ISPALBase returnedService =
@@ -33,13 +42,7 @@ private void ShouldGetService()
 
             ISPALBase expectedService = returnedService;
 
-            DependencyInjection expectedDependencyInjection =
-                new DependencyInjection
-                {
-                    ServiceCollection = inputDependencyInjection.ServiceCollection,
-                    ServiceProvider = inputDependencyInjection.ServiceCollection.BuildServiceProvider()
-                };
-
+            DependencyInjection expectedDependencyInjection = inputDependencyInjection;
             DependencyInjection returnedDependencyInjection = expectedDependencyInjection;
 
             this.dependencyInjectionBroker
diff --git a/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.cs b/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.cs
index 201689b..f8aaa84 100644
--- a/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.cs
+++ b/STX.SPAL.Core.Tests.Unit/Services/Foundations/DependenciesInjections/DependencyInjectionServiceTests.cs
@@ -86,12 +86,11 @@ private static Type CreateRandomImplementationType()
 
             TypeBuilder typeBuilder = moduleBuilder.DefineType(
                 name: GetRandomString(),
-                attr: TypeAttributes.Public | TypeAttributes.Class,
-                parent: null,
-                interfaces: new Type[]
-                {
-                    iSpalBaseType
-                });
+                attr:
+                    TypeAttributes.Public
+                    | TypeAttributes.Class);
+
+            typeBuilder.AddInterfaceImplementation(iSpalBaseType);
 
             MethodInfo methodInfoGetSPALId =
                 iSpalBaseType
@@ -101,15 +100,22 @@ private static Type CreateRandomImplementationType()
                 typeBuilder
                     .DefineMethod(
                         name: nameof(ISPALBase.GetSPALId),
-                        attributes: MethodAttributes.Public | MethodAttributes.Virtual,
-                        callingConvention: CallingConventions.HasThis,
+                        attributes:
+                            MethodAttributes.Public
+                            | MethodAttributes.Final
+                            | MethodAttributes.HideBySig
+                            | MethodAttributes.NewSlot
+                            | MethodAttributes.Virtual,
+
                         returnType: typeof(string),
                         parameterTypes: Type.EmptyTypes);
 
             ILGenerator ilGenerator =
                 getSPALIDMethodBuilder.GetILGenerator();
 
-            ilGenerator.Emit(OpCodes.Ret, "Hello SPAL ID");
+            ilGenerator.Emit(OpCodes.Ldstr, "Hello SPAL ID");
+            ilGenerator.Emit(OpCodes.Ret);
+
             typeBuilder.DefineMethodOverride(
                 getSPALIDMethodBuilder,
                 iSpalBaseType.GetMethod(nameof(ISPALBase.GetSPALId)));
diff --git a/STX.SPAL.Core/Services/Foundations/DepedenciesInjections/DependencyInjectionService.cs b/STX.SPAL.Core/Services/Foundations/DepedenciesInjections/DependencyInjectionService.cs
index 2b0096c..6d79969 100644
--- a/STX.SPAL.Core/Services/Foundations/DepedenciesInjections/DependencyInjectionService.cs
+++ b/STX.SPAL.Core/Services/Foundations/DepedenciesInjections/DependencyInjectionService.cs
@@ -73,7 +73,10 @@ public DependencyInjection BuildServiceProvider(DependencyInjection dependencyIn
                 };
             });
 
-        public T GetService<T>(DependencyInjection dependencyInjection) =>
-            throw new NotImplementedException();
+        public T GetService<T>(DependencyInjection dependencyInjection)
+        {
+            return dependencyInjectionBroker.GetService<T>(
+                dependencyInjection.ServiceProvider);
+        }
     }
 }