code: @Override
  	public void removeByKey(String key) {
  		for (CPDefinitionOptionValueRel cpDefinitionOptionValueRel : findByKey(
  				key, QueryUtil.ALL_POS, QueryUtil.ALL_POS, null)) {
  			remove(cpDefinitionOptionValueRel);
  		}
  	}
docs: Removes all the cp definition option value rels where key = &#63; from the database.
  
  @param key the key