code: @Override
      public <T> List<Future<T>> executeAll(@SuppressWarnings("unchecked") Executable<T>... executables) {
          List<Future<T>> responses = new ArrayList<>();
          for (Executable<T> executable : executables) {
              responses.add(execute(executable));
          }
          return responses;
      }
docs: /*
  (non-Javadoc)
  
  @see com.ericsson.concurrent.Executor#executeAll(com.ericsson.concurrent.Executable<T>[])