JSTL code to iterate over a Map

Helpful snippet of JSTL code to iterate over a

Map<String, List<SomeDO>>

<c:set var="topSellersByCategoryMap" value="${results.topSellersByCategoryMap}"/>

<c:forEach var="entry" items="${topSellersByCategoryMap}">
  Name: ${entry.key}
  Value: ${entry.value}

    <c:forEach var="listitem" items="${entry.value}">
      Item: ${listitem.merchant.domain}
    </c:forEach>
</c:forEach>