question: @ Override public void flush ( ) { flush ( false ) ; }
target:  Flushes page and it's content stream. <br> <br> If the page belongs to the document which is tagged, page flushing also triggers flushing of the tags, which are considered to belong to the page. The logic that defines if the given tag (structure element) belongs to the page is the following: if all the marked content references (dictionary or number references), that are the descenders of the given structure element, belong to the current page - the tag is considered to belong to the page. If tag has descenders from several pages - it is flushed, if all other pages except the current one are flushed.