// Provide a default path to dwr.engine
if (dwr == null) var dwr = {};
if (dwr.engine == null) dwr.engine = {};
if (DWREngine == null) var DWREngine = dwr.engine;

if (attrMutex == null) var attrMutex = {};
attrMutex._path = '/dwr';
attrMutex.getMutex = function(p0, callback) {
  dwr.engine._execute(attrMutex._path, 'attrMutex', 'getMutex', p0, callback);
}