src/Configuration/NormalizerConfigPass.php
private function normalizeFormConfig(array $backendConfig)
    {
        foreach ($backendConfig['entities'] as $entityName => $entityConfig) {
            if (isset($entityConfig['form'])) {
                $entityConfig['new'] = isset($entityConfig['new']) ? $this->mergeFormConfig($entityConfig['form'], $entityConfig['new']) : $entityConfig['form'];
                $entityConfig['edit'] = isset($entityConfig['edit']) ? $this->mergeFormConfig($entityConfig['form'], $entityConfig['edit']) : $entityConfig['form'];
            }

            $backendConfig['entities'][$entityName] = $entityConfig;
        }

        return $backendConfig;
    }
private function normalizeFormConfig(array $backendConfig)
    {
        foreach ($backendConfig['entities'] as $entityName => $entityConfig) {
            if (isset($entityConfig['form'])) {
                $entityConfig['new'] = isset($entityConfig['new']) ? $this->mergeFormConfig($entityConfig['form'], $entityConfig['new']) : $entityConfig['form'];
                $entityConfig['edit'] = isset($entityConfig['edit']) ? $this->mergeFormConfig($entityConfig['form'], $entityConfig['edit']) : $entityConfig['form'];
            }

            $backendConfig['entities'][$entityName] = $entityConfig;
        }

        return $backendConfig;
    }
Process the configuration of the 'form' view (if any) to complete the
configuration of the 'edit' and 'new' views.

@param array $backendConfig [description]

@return array