src/language-markdown/printer-markdown.js/shouldPrePrintTripleHardline
function shouldPrePrintTripleHardline(node, data) {
  const isPrevNodeList = data.prevNode && data.prevNode.type === "list";
  const isIndentedCode = node.type === "code" && node.isIndented;

  return isPrevNodeList && isIndentedCode;
}