def getOptimizationMetricInfo(self):
return (self._optimizeKey, self._maximize)<EOL>
Retrives the optimization key name and optimization function.

        Parameters:
        ---------------------------------------------------------
        retval:       (optimizationMetricKey, maximize)
                      optimizationMetricKey: which report key to optimize for
                      maximize: True if we should try and maximize the optimizeKey
                        metric. False if we should minimize it.