From doccheck:

build/linux-x86_64-server-release/images/docs/api/java.sql.rowset/javax/sql/rowset/spi/SyncProvider.html:153: headings omitted
build/linux-x86_64-server-release/images/docs/api/java.sql.rowset/javax/sql/rowset/spi/SyncProvider.html:116: Note: This is the previous heading

Here are the headings:
$ grep 'h[1-6]' open/src/java.sql.rowset/share/classes/javax/sql/rowset/spi/SyncProvider.java
 * <h3>1.0 Naming Convention for Implementations</h3>
 * <h2>2.0 How a <code>RowSet</code> Object Gets Its Provider</h2>
 * <h2>3.0 Violations and Synchronization Issues</h2>
 * <h2>4.0 Updatable SQL VIEWs</h2>
 * <h2>5.0 <code>SyncProvider</code> Constants</h2>