code: public void deleteDevicePipeProperties(Database database, String deviceName,
                                           String pipeName, List<String> propertyNames) throws DevFailed {
  
          String[]    array = new String[propertyNames.size()+2];
          int i=0;
          array[i++] = deviceName;
          array[i++] = pipeName;
          for (String propertyName : propertyNames)
              array[i++] = propertyName;
          DeviceData  argIn = new DeviceData();
          argIn.insert(array);
          database.command_inout("DbDeleteDevicePipeProperty", argIn);
      }
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