code:   public void execute(FunctionContext context) {
      Object[] arguments = (Object[]) context.getArguments();
      String regionName = (String) arguments[0];
      Set<String> keys = (Set<String>) arguments[1];
      if (this.cache.getLogger().fineEnabled()) {
        StringBuilder builder = new StringBuilder();
        builder.append("Function ").append(ID).append(" received request to touch ")
            .append(regionName).append("->").append(keys);
        this.cache.getLogger().fine(builder.toString());
      }
  
      // Retrieve the appropriate Region and value to update the lastAccessedTime
      Region region = this.cache.getRegion(regionName);
      if (region != null) {
        region.getAll(keys);
      }
  
      // Return result to get around NPE in LocalResultCollectorImpl
      context.getResultSender().lastResult(true);
    }
  
    @Override
  