code: private PyObject deCachePythonObject(String oid) {
  		if (useCache && scriptCache.containsKey(oid)) {
  			return scriptCache.get(oid);
  		}
  		return null;
  	}
docs: Return a python object from the cache if configured
  
  @param oid
  : The rules OID to retrieve if cached
  @return PyObject : The cached object, null if not found