public boolean hasIdentity(String category, String type) {
        String key = XmppStringUtils.generateKey(category, type);
        return identitiesSet.contains(key);
    }
public boolean hasIdentity ( String category , String type ) { String key = XmppStringUtils . generateKey ( category , type ) ; return identitiesSet . contains ( key ) ; }
Returns true if this DiscoverInfo contains at least one Identity of the given category and type.

@param category the category to look for.
@param type the type to look for.
@return true if this DiscoverInfo contains a Identity of the given category and type.