docs: public static Info rng( final Variable A , ManagerTempVariables manager) {
  
          Info ret = new Info();
  
          if( A instanceof VariableInteger ) {
              ret.op = new Operation("rng") {
                  @Override
                  public void process() {
                      int seed = ((VariableInteger)A).value;
                      manager.getRandom().setSeed(seed);
                  }
              };
          } else {
              throw new RuntimeException("Expected one integer");
          }
  
          return ret;
      }