data/BadConfigurationBag.php
public function get($configurationKey) {
        if (!isset($this->configuration[$configurationKey])) {
            var_dump($this->configuration);
            trigger_error("\"$configurationKey\" not set", E_NOTICE);
            return false;
        }

        return($this->configuration[$configurationKey]);
    }
public function get($configurationKey) {
        if (!isset($this->configuration[$configurationKey])) {
            var_dump($this->configuration);
            trigger_error("\"$configurationKey\" not set", E_NOTICE);
            return false;
        }

        return($this->configuration[$configurationKey]);
    }
get

@param string $configurationKey
@return mixed