code: public void execute()
          throws InstallationException
      {
          Instance instance = searchInstance();
          if (instance == null) {
              instance = createInstance();
          }
          updateDB(instance);
      }
docs: Import related source code into the eFaps DataBase. If the source code
  does not exists, the source code is created in eFaps.
  
  @throws InstallationException on error
  @see #searchInstance()
  @see #createInstance()
  @see #updateDB(Instance)