Refactor.

PSManagement.SharedKernel/Interfaces/ISpecification.cs

@@ -14,7 +14,7 @@ namespace PSManagement.SharedKernel.Interfaces
 
         int Take { get; }
         int Skip { get; }
-        bool isPagingEnabled { get; }
+        bool IsPagingEnabled { get; }
 
     }
 }

PSManagement.SharedKernel/Repositories/IRepository.cs

@@ -7,11 +7,11 @@ namespace PSManagement.SharedKernel.Repositories
 {
     public interface IRepository<T> where T :BaseEntity
     {
-        Task<T> GetByIdAsync(int id);
-        Task<List<T>> ListAsync();
-        Task<List<T>> ListAsync(ISpecification<T> spec);
+        Task<T> GetByIdAsync(int id, ISpecification<T> specification = null);
+        Task<IEnumerable<T>> ListAsync();
+        Task<IEnumerable<T>> ListAsync(ISpecification<T> specification);
         Task<T> AddAsync(T entity);
-        Task UpdateAsync(T entity);
+        Task<T> UpdateAsync(T entity);
         Task DeleteAsync(T entity);
     }
 }

PSManagement.SharedKernel/Specification/BaseSpecification.cs

@@ -21,7 +21,7 @@ namespace PSManagement.SharedKernel.Specification
 
         public int Take { get; private set; }
         public int Skip { get; private set; }
-        public bool isPagingEnabled { get; private set; } = false;
+        public bool IsPagingEnabled { get; private set; } = false;
 
         protected virtual void AddInclude(Expression<Func<T, object>> includeExpression)
         {
@@ -35,7 +35,7 @@ namespace PSManagement.SharedKernel.Specification
         {
             Skip = skip;
             Take = take;
-            isPagingEnabled = true;
+            IsPagingEnabled = true;
         }
         protected virtual void ApplyOrderBy(Expression<Func<T, object>> orderByExpression)
         {