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: ssh.go
    path of file: ./repos/teller/vendor/github.com/hashicorp/vault/api
    
    the code of the file until where you have to start completion: package api

import (
	"context"
	"fmt"
)

// SSH is used to return a client to invoke operations on SSH backend.
type SSH struct {
	c          *Client
	MountPoin
    
func (c *SSH) SignKey(role string, data map[string]interface{}) (*Secret, error) {
	r := c.c.NewRequest("PUT", fmt.Sprintf("/v1/%s/sign/%s", c.MountPoint, role))
	if err := r.SetJSONBody(data); err != nil {
		return nil, err
	}

	ctx, cancelFunc := context.WithCancel(context.Background())
	defer cancelFunc()
	resp, err := c.c.RawRequestWithContext(ctx, r)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	return ParseSecret(resp.Body)
}