/// @param ident Identifier of document to search for
/// @return Doc or undefined, if there were no matching documents.
public static final Object[] p_getChild = { "*type", null, "*ident", null };
public Any m_getChild(String type, String ident)
{
Doc doc;
if (type != null) {
doc = _doc.findFirst(type, ident);
} else {
doc = _doc.getFirstChild();
}