code: @Nullable
    public static CascadingStyleSheet readFromString (@Nonnull final String sCSS,
                                                      @Nonnull final Charset aFallbackCharset,
                                                      @Nonnull final ECSSVersion eVersion)
    {
      return readFromStringStream (sCSS,
                                   new CSSReaderSettings ().setFallbackCharset (aFallbackCharset)
                                                           .setCSSVersion (eVersion));
    }
docs: Read the CSS from the passed String using a byte stream.
  
  @param sCSS
  The source string containing the CSS to be parsed. May not be
  <code>null</code>.
  @param aFallbackCharset
  The charset to be used in case neither a <code>@charset</code> rule
  nor a BOM is present. May not be <code>null</code>.
  @param eVersion
  The CSS version to use. May not be <code>null</code>.
  @return <code>null</code> if reading failed, the CSS declarations
  otherwise.