code: @Nullable
    @ReturnsMutableCopy
    public static double [] getAllExceptFirst (@Nullable final double [] aArray, @Nonnegative final int nElementsToSkip)
    {
      ValueEnforcer.isGE0 (nElementsToSkip, "ElementsToSkip");
  
      if (nElementsToSkip == 0)
        return aArray;
      if (aArray == null || nElementsToSkip >= aArray.length)
        return null;
      return getCopy (aArray, nElementsToSkip, aArray.length - nElementsToSkip);
    }
docs: Get an array that contains all elements, except for the first <em>n</em>
  elements.
  
  @param aArray
  The source array. May be <code>null</code>.
  @param nElementsToSkip
  The number of elements to skip. Must be &gt;= 0!
  @return <code>null</code> if the passed array is <code>null</code> or has
  &le; elements than elements to be skipped. A non-<code>null</code>
  copy of the array without the first elements otherwise.