text: #ifndef GROUP_BUILDER_H
  #define GROUP_BUILDER_H
  
  #include "../MeshMediator.h"
  #include "../Builder.h"
  
  class GroupBuilder : public Builder {
  private:
      MeshMediator* mediator;
  
  public:
      GroupBuilder(MeshMediator* mediator);
      ~GroupBuilder();
      void process(stringstream& line) override;
  };
  
  #endif
  