code: @Nonnull
    public CSSReaderSettings setTabSize (@Nonnegative final int nTabSize)
    {
      ValueEnforcer.isGT0 (nTabSize, "TabSize");
      m_nTabSize = nTabSize;
      return this;
    }
docs: Set the tab size to be used to determine the source location.
  
  @param nTabSize
  The tab size to use. Must be &gt; 0.
  @return this for chaining
  @since 5.0.2