You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: watch_few.go
    path of file: ./repos/goldfish/vendor/github.com/hashicorp/go-memdb
    
    the code of the file until where you have to start completion: package memdb

//go:generate sh -c "go run watch-gen/main.go >watch_few.go"

import(
	"context"
)

// aFew gives how many watchers this function is wired to support. You must
// always pass a full slice of this length, but unused channels can be nil.
const aFew = 32

// watchFe
    
func watchFew(ctx context.Context, ch []<-chan struct{}) error {
	select {

	case <-ch[0]:
		return nil

	case <-ch[1]:
		return nil

	case <-ch[2]:
		return nil

	case <-ch[3]:
		return nil

	case <-ch[4]:
		return nil

	case <-ch[5]:
		return nil

	case <-ch[6]:
		return nil

	case <-ch[7]:
		return nil

	case <-ch[8]:
		return nil

	case <-ch[9]:
		return nil

	case <-ch[10]:
		return nil

	case <-ch[11]:
		return nil

	case <-ch[12]:
		return nil

	case <-ch[13]:
		return nil

	case <-ch[14]:
		return nil

	case <-ch[15]:
		return nil

	case <-ch[16]:
		return nil

	case <-ch[17]:
		return nil

	case <-ch[18]:
		return nil

	case <-ch[19]:
		return nil

	case <-ch[20]:
		return nil

	case <-ch[21]:
		return nil

	case <-ch[22]:
		return nil

	case <-ch[23]:
		return nil

	case <-ch[24]:
		return nil

	case <-ch[25]:
		return nil

	case <-ch[26]:
		return nil

	case <-ch[27]:
		return nil

	case <-ch[28]:
		return nil

	case <-ch[29]:
		return nil

	case <-ch[30]:
		return nil

	case <-ch[31]:
		return nil

	case <-ctx.Done():
		return ctx.Err()
	}
}