@Override
 public int getPreferredContentsHeight(
     ParagraphRenderStyle defaultStyle,
     int yStart,
     ContainerRenderSpace containerRenderSpace,
     int sideIndents) {
   FallbackParagraphRenderStyle fallbackStyle =
       new FallbackParagraphRenderStyle(paragraphRenderStyle, defaultStyle);
   int containerWidth = containerRenderSpace.getContainerWidth();
   int topIndent =
       fallbackStyle.getParagraphMarginTop().getValue(containerWidth)
           + fallbackStyle.getParagraphPaddingTop().getValue(containerWidth);
   int paragraphIndents =
       topIndent
           + fallbackStyle.getParagraphPaddingBottom().getValue(containerWidth)
           + fallbackStyle.getParagraphMarginBottom().getValue(containerWidth);
   return paragraphIndents
       + DocumentRenderer.getParagraphsPreferredHeight(
           fallbackStyle, paragraphs, containerRenderSpace, yStart + topIndent);
 }