code: func Connect(opt *Options) *DB {
  	opt.init()
  	return newDB(
  		context.TODO(),
  		&baseDB{
  			opt:  opt,
  			pool: newConnPool(opt),
  		},
  	)
  }
docs: // Connect connects to a database using provided options.
  //
  // The returned DB is safe for concurrent use by multiple goroutines
  // and maintains its own connection pool.