code: public static <O extends Object> void noNullElements(Iterable<O> coll)  {
  		if(!validation) return;
  		notNull(coll);
  		for(O o: coll){
  			try{
  				notNull(o);
  			} catch(ParameterException e1){
  				throw new ParameterException(ErrorCode.NULLELEMENTS);
  			}
  		}
  	}
docs: Checks if the given iterable object contains <code>null</code> values.
  @param coll The iterable object to validate.
  @throws ParameterException if the given object contains any <code>null</code> values.