client.go
func OptClientTotalPoolSize(size int) ClientOption {
	return func(options *ClientOptions) error {
		options.TotalPoolSize = size
		return nil
	}
}
func OptClientTotalPoolSize(size int) ClientOption {
	return func(options *ClientOptions) error {
		options.TotalPoolSize = size
		return nil
	}
}
func OptClientTotalPoolSize ( size int ) ClientOption { return func ( options * ClientOptions ) error { options . TotalPoolSize = size return nil } }
// OptClientTotalPoolSize is the maximum number of connections in the pool.
OptClientTotalPoolSize is the maximum number of connections in the pool .