void clearBondLists() {
		if (rbondList != null && !rbondList.isEmpty()) {
			synchronized (rbondList) {
				for (RBond rbond : rbondList) {
					model.getRBonds().remove(rbond);
				}
				rbondList.clear();
			}
		}
		if (abondList != null && !abondList.isEmpty()) {
			synchronized (abondList) {
				for (ABond abond : abondList) {
					model.getABonds().remove(abond);
				}
				abondList.clear();
			}
		}
		if (tbondList != null && !tbondList.isEmpty()) {
			synchronized (tbondList) {
				for (TBond tbond : tbondList) {
					model.getTBonds().remove(tbond);
				}
				tbondList.clear();
			}
		}
	}