title: Should method which use JpaRepository save() method return something?
body: <p>I have a question about saving using JpaRepository.
  I have a Repository for my entity, and its service realization. For instance:</p>
  
  <pre><code>public Obj saveObj(Obj o) {
    return repo.save(obj);
  }
  </code></pre>
  
  <p>Question: Is this a good approach to return Obj, if I don't set the saving result to other Obj?
  For instance:</p>
  
  <pre><code>public void myMethod() {
    Obj obj = buildObj();
    servise.saveObj(obj);
  }
  </code></pre>
  
  <p>The main cause of this return in <code>saveObj(Obj o)</code> method that I need it for testing.
  Will be glad to your advices.</p>