diff --git a/fluent/Continuable.h b/fluent/Continuable.h
index 8a831f6..dad40c6 100644
--- a/fluent/Continuable.h
+++ b/fluent/Continuable.h
@@ -202,15 +202,28 @@ namespace detail
             }, std::move(*this));
         }
 
-        /*
-        // TODO Accept only correct callbacks
+        /// Placeholder
         template<typename... _CTy>
-        Continuable<Callback<_ATy...>> all(_CTy&&...)
+        _ContinuableImpl& all(_CTy&&...)
         {
-            // TODO Transmute the returned callback here.
-            return Continuable<Callback<_ATy...>>(std::move(*this));
+            return *this;
+        }
+
+        /// Placeholder
+        template<typename... _CTy>
+        _ContinuableImpl& some(size_t const count, _CTy&&...)
+        {
+            return *this;
+        }
+
+        /// Placeholder
+        template<typename... _CTy>
+        auto any(_CTy&&... functionals)
+            -> decltype(some(1, std::declval<_CTy>()...))
+        {
+            // Equivalent to invoke `some` with count 1.
+            return some(1, std::forward<_CTy>(functionals)...);
         }
-        */
 
         /*
         /// Validates the Continuable
@@ -307,4 +320,19 @@ inline auto make_continuable(_FTy&& functional)
     return detail::continuable_factory_t<_FTy>::CreateFrom(std::forward<_FTy>(functional));
 }
 
+/// Creates an empty continuable.
+/// Can be used to start a chain with aggregate methods.
+/// empty_continuable()
+///     .all(...)
+///     .some(...)
+///     .any(...)
+inline auto empty_continuable()
+    -> Continuable<>
+{
+    return make_continuable([](Callback<>&& callback)
+    {
+        callback();
+    });
+}
+
 #endif // _CONTINUABLE_H_
diff --git a/test.cpp b/test.cpp
index 6e6787c..39eabcd 100644
--- a/test.cpp
+++ b/test.cpp
@@ -44,6 +44,18 @@ Continuable<SpellCastResult> CastSpellPromise(int id)
     });
 }
 
+// Void instant returning continuable promise for testing purposes
+Continuable<> TrivialPromise(std::string const& msg = "")
+{
+    return make_continuable([=](Callback<>&& callback)
+    {
+        if (!msg.empty())
+            std::cout << msg << std::endl;
+
+        callback();
+    });
+}
+
 Continuable<bool> Validate()
 {
     return make_continuable([=](Callback<bool>&& callback)
@@ -84,6 +96,26 @@ int main(int /*argc*/, char** /*argv*/)
             return Validate();
         });
 
+    // Mockup of aggregate methods
+    empty_continuable()
+        .all(
+            [] { return TrivialPromise(); },
+            [] { return TrivialPromise(); },
+            [] { return TrivialPromise(); }
+        )
+        .some(2, // Only 2 of 3 must complete
+            [] { return TrivialPromise(); },
+            [] { return TrivialPromise(); },
+            [] { return TrivialPromise(); }
+        )
+        .any(    // Any of 2.
+            [] { return TrivialPromise(); },
+            [] { return TrivialPromise(); }
+        )
+        .then([]
+        {
+        });
+
     //Continuable<bool> cb = make_continuable([](Callback<bool>&& callback)
     //{