array (
  0 => 'currentBulkOperation(type: MUTATION)',
  '$response_body' => 
  array (
    'data' => 
    array (
      'currentBulkOperation' => NULL,
    ),
    'extensions' => 
    array (
      'cost' => 
      array (
        'requestedQueryCost' => 1,
        'actualQueryCost' => 1,
        'throttleStatus' => 
        array (
          'maximumAvailable' => 20000.0,
          'currentlyAvailable' => 19999,
          'restoreRate' => 1000.0,
        ),
      ),
    ),
  ),
)

array (
  0 => 'currentBulkOperation(type: QUERY)',
  '$response_body' => 
  array (
    'data' => 
    array (
      'currentBulkOperation' => NULL,
    ),
    'extensions' => 
    array (
      'cost' => 
      array (
        'requestedQueryCost' => 1,
        'actualQueryCost' => 1,
        'throttleStatus' => 
        array (
          'maximumAvailable' => 20000.0,
          'currentlyAvailable' => 19999,
          'restoreRate' => 1000.0,
        ),
      ),
    ),
  ),
)