Added split namespace test case

src/common/model/decorated_element.cc

@@ -80,4 +80,11 @@ void decorated_element::add_decorators(
         decorators_.push_back(d);
     }
 }
+
+void decorated_element::append(const decorated_element &de)
+{
+    for (auto d : de.decorators()) {
+        decorators_.push_back(d);
+    }
+}
 }

src/common/model/decorated_element.h

@@ -43,6 +43,8 @@ public:
     void add_decorators(
         const std::vector<std::shared_ptr<decorators::decorator>> &decorators);
 
+    void append(const decorated_element &de);
+
 private:
     std::vector<std::shared_ptr<decorators::decorator>> decorators_;
 };

src/common/model/element.cc

@@ -64,4 +64,6 @@ const std::vector<relationship> &element::relationships() const
 {
     return relationships_;
 }
+
+void element::append(const element &e) { decorated_element::append(e); }
 }

src/common/model/element.h

@@ -52,6 +52,8 @@ public:
 
     void add_relationship(relationship &&cr);
 
+    void append(const element &e);
+
 protected:
     const uint64_t m_id{0};