Move the resource allocation details into ContinuousResourceAllocation

Change-Id: If5b6a86c92f27cc7acf65e6e397f72afd3a4cb41

@@ -70,6 +70,13 @@ final class ContinuousResourceAllocation {
         return allocations;
     }
 
+    ContinuousResourceAllocation allocate(ContinuousResource original, ResourceAllocation value) {
+        return new ContinuousResourceAllocation(original, ImmutableList.<ResourceAllocation>builder()
+                .addAll(allocations)
+                .add(value)
+                .build());
+    }
+
     ContinuousResourceAllocation release(ContinuousResource resource, ResourceConsumerId consumerId) {
         List<ResourceAllocation> nonMatched = allocations.stream()
                 .filter(x -> !(x.consumerId().equals(consumerId) &&

@@ -156,11 +156,7 @@ class TransactionalContinuousResourceStore {
             return true;
         }
 
-        ContinuousResourceAllocation newValue = new ContinuousResourceAllocation(original,
-                ImmutableList.<ResourceAllocation>builder()
-                        .addAll(oldValue.allocations())
-                        .add(value)
-                        .build());
+        ContinuousResourceAllocation newValue = oldValue.allocate(original, value);
         return consumers.replace(original.id(), oldValue, newValue);
     }