Move common methods to abstract class

Author: ManticSic

src/UnityContainerAttributeRegistration/Populator/Populator.cs

@@ -1,6 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
+
+using JetBrains.Annotations;
 
 using Unity;
 
@@ -41,5 +44,33 @@ protected IEnumerable<Type> GetTypesWith<TAttribute>(TypeDefined typeDefined) wh
                             .Where(type => type.IsDefined(typeof(TAttribute), typeDefined == TypeDefined.Inherit))
                 ;
         }
+
+        /// <summary>
+        ///     Create an instance for <paramref name="objectType" />.
+        /// </summary>
+        /// <param name="objectType"><see cref="Type" /> used to create an instance.</param>
+        /// <typeparam name="T"><paramref name="objectType" /> must be type-equal to, inherit or implement <typeparamref name="T" />.</typeparam>
+        /// <returns>New instance of <paramref name="objectType" /> as <typeparamref name="T" />.</returns>
+        /// <exception cref="InvalidOperationException">Cannot create an instance of <paramref name="objectType" />. Whether <paramref name="objectType" /> is not type-equal, does not inherit or implement <typeparamref name="T" /> or has no default constructor.</exception>
+        [NotNull]
+        protected T GetInstanceByType<T>([NotNull] Type objectType)
+        {
+            Type targetType = typeof(T);
+
+            if(!targetType.IsAssignableFrom(objectType))
+            {
+                throw new InvalidOperationException($"Type {objectType.FullName} cannot be assigned from {targetType.FullName}");
+            }
+
+            ConstructorInfo ctor = objectType.GetConstructor(Type.EmptyTypes);
+
+            if(ctor == null)
+            {
+                throw new InvalidOperationException(
+                    $"Cannot create instance of ITypeLifetimeManager. No default constructor found for {objectType.FullName}");
+            }
+
+            return (T) ctor.Invoke(new object[0]);
+        }
     }
 }

src/UnityContainerAttributeRegistration/Populator/TypePopulator.cs

@@ -3,8 +3,6 @@
 using System.Linq;
 using System.Reflection;
 
-using JetBrains.Annotations;
-
 using Unity;
 using Unity.Lifetime;
 
@@ -59,33 +57,5 @@ public override IUnityContainer Populate(IUnityContainer container)
 
             return container;
         }
-
-        /// <summary>
-        ///     Create an instance for <paramref name="objectType" />.
-        /// </summary>
-        /// <param name="objectType"><see cref="Type" /> used to create an instance.</param>
-        /// <typeparam name="T"><paramref name="objectType" /> must be type-equal to, inherit or implement <typeparamref name="T" />.</typeparam>
-        /// <returns>New instance of <paramref name="objectType" /> as <typeparamref name="T" />.</returns>
-        /// <exception cref="InvalidOperationException">Cannot create an instance of <paramref name="objectType" />. Whether <paramref name="objectType" /> is not type-equal, does not inherit or implement <typeparamref name="T" /> or has no default constructor.</exception>
-        [NotNull]
-        private T GetInstanceByType<T>([NotNull] Type objectType)
-        {
-            Type targetType = typeof(T);
-
-            if(!targetType.IsAssignableFrom(objectType))
-            {
-                throw new InvalidOperationException($"Type {objectType.FullName} cannot be assigned from {targetType.FullName}");
-            }
-
-            ConstructorInfo ctor = objectType.GetConstructor(Type.EmptyTypes);
-
-            if(ctor == null)
-            {
-                throw new InvalidOperationException(
-                    $"Cannot create instance of ITypeLifetimeManager. No default constructor found for {objectType.FullName}");
-            }
-
-            return (T) ctor.Invoke(new object[0]);
-        }
     }
 }