/**
* Associates the specified <CODE>PdfObject</CODE> as <VAR>value</VAR> with the specified <CODE>
* PdfName</CODE> as <VAR>key</VAR> in this map.
*
* <p>If the map previously contained a mapping for this <VAR>key</VAR>, the old <VAR>value</VAR>
* is replaced. If the <VAR>value</VAR> is <CODE>null</CODE> or <CODE>PdfNull</CODE> the key is
* deleted.
*
* @param key a <CODE>PdfName</CODE>
* @param object the <CODE>PdfObject</CODE> to be associated with the <VAR>key</VAR>
*/
public void put(final PdfName key, final PdfObject object) {
if (object == null || object.isNull()) hashMap.remove(key);
else hashMap.put(key, object);
}
