docs: public void setBREE(String bree) {
  		String old = mainAttributes.get(BUNDLE_REQUIREDEXECUTIONENVIRONMENT);
  		if (!bree.equals(old)) {
  			this.mainAttributes.put(BUNDLE_REQUIREDEXECUTIONENVIRONMENT, bree);
  			this.modified = true;
  			this.bree = bree;
  		}
  	}