Method __construct

/**
 * Constructor.
 *
 * Mandatory arguments:
 * attributes   array           The main data for the object.
 * context      string          The content type of the api resource.
 *
 * @param   string  $name       The event name.
 * @param   array   $arguments  The event arguments.
 *
 * @since   4.0.0
 * @throws  \BadMethodCallException
 */
public function __construct($name, array $arguments = array())
{
    if (!\array_key_exists('attributes', $arguments) || \array_key_exists('attributes', $arguments) && !is_array($arguments['attributes'])) {
        throw new \BadMethodCallException("Argument 'attributes' as an array is required for event {$name}");
    }
    if (!\array_key_exists('context', $arguments)) {
        throw new \BadMethodCallException("Argument 'context' is required for event {$name}");
    }
    parent::__construct($name, $arguments);
}