code: public static void notEmpty(final Object[] array, final String arrayName) {
          notNull(array, arrayName);
  
          if (array.length == 0) {
              throw new IllegalArgumentException("expecting " + maskNullArgument(arrayName) + " to contain 1 or more elements");
          }
      }
docs: Check that an array is not empty
  @param array the array to check
  @param arrayName the name of the array
  @throws IllegalArgumentException if array is null or if the array is empty