NerdsAndCompany\Schematic\Services\Schematic::getExportableDataTypes PHP Method

    public static function getExportableDataTypes()
    {
        return self::$exportableDataTypes;
    }

 /**
  * Exports the Craft datamodel.
  *
  * @param string $file    file to write the schema to
  * @param array  $exclude Data to not export
  *
  * @return int
  */
 public function actionIndex($file = 'craft/config/schema.yml', array $exclude = null)
 {
     $dataTypes = Schematic::getExportableDataTypes();
     // If there are data exclusions.
     if ($exclude !== null) {
         // Find any invalid data to exclude.
         $invalidExcludes = array_diff($exclude, $dataTypes);
         // If any invalid exclusions were specified.
         if (count($invalidExcludes) > 0) {
             $errorMessage = 'Invalid exlude';
             if (count($invalidExcludes) > 1) {
                 $errorMessage .= 's';
             }
             $errorMessage .= ': ' . implode(', ', $invalidExcludes) . '.';
             $errorMessage .= ' Valid exclusions are ' . implode(', ', $dataTypes);
             // Output an error message outlining what invalid exclusions were specified.
             echo "\n" . $errorMessage . "\n\n";
             return 1;
         }
         // Remove any explicitly excluded data types from the list of data types to export.
         $dataTypes = array_diff($dataTypes, $exclude);
     }
     Craft::app()->schematic->exportToYaml($file, $dataTypes);
     Craft::log(Craft::t('Exported schema to {file}', ['file' => $file]));
     return 0;
 }