private static function logQuery(string $query): void
  {
    $query = trim($query);

    if (strpos($query, "\n")!==false)
    {
      // Query is a multi line query.
      self::$io->logVeryVerbose('Executing query:');
      self::$io->logVeryVerbose('<sql>%s</sql>', $query);
    }
    else
    {
      // Query is a single line query.
      self::$io->logVeryVerbose('Executing query: <sql>%s</sql>', $query);
    }
  }