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: path_decrypt.go
    path of file: ./repos/goldfish/vendor/github.com/hashicorp/vault/builtin/logical/transit
    
    the code of the file until where you have to start completion: package transit

import (
	"encoding/base64"
	"fmt"

	"github.com/hashicorp/vault/helper/errutil"
	"github.com/hashicorp/vault/logical"
	"github.com/hashicorp/vault/logical/framework"
	"github.com/mitchellh/mapstructure"
)

func (b *backend) pathDecrypt() *framework.Path {
	return &framework.Path{
		Pattern: "decrypt/" + framework.GenericNameRegex("name"),
		Fields: map[string]*framework.FieldSchema{
			"name": &framework.FieldSchema{
				Type:        framework.TypeString,
				Description: "Name of the policy",
			},

			"ciphertext": &framework.FieldSchema{
				Type: framework.TypeString,
				Description: `
The ciphertext to decrypt, provided as returned by encrypt.`,
			},

			"context": &framework.FieldSchema{
				Type: framework.TypeString,
				Description: `
Base64 encoded context for key derivation. Required if key derivation is
enabled.`,
			},

			"nonce": &framework.FieldSchema{
				Type: framework.TypeString,
				Description: `
Base64 encoded nonce value used during encryption. Must be provided if
convergent encryption is enabled fo
    
func (b *backend) pathDecrypt() *framework.Path {
	return &framework.Path{
		Pattern: "decrypt/" + framework.GenericNameRegex("name"),
		Fields: map[string]*framework.FieldSchema{
			"name": &framework.FieldSchema{
				Type:        framework.TypeString,
				Description: "Name of the policy",
			},

			"ciphertext": &framework.FieldSchema{
				Type: framework.TypeString,
				Description: `
The ciphertext to decrypt, provided as returned by encrypt.`,
			},

			"context": &framework.FieldSchema{
				Type: framework.TypeString,
				Description: `
Base64 encoded context for key derivation. Required if key derivation is
enabled.`,
			},

			"nonce": &framework.FieldSchema{
				Type: framework.TypeString,
				Description: `
Base64 encoded nonce value used during encryption. Must be provided if
convergent encryption is enabled for this key and the key was generated with
Vault 0.6.1. Not required for keys created in 0.6.2+.`,
			},
		},

		Callbacks: map[logical.Operation]framework.OperationFunc{
			logical.UpdateOperation: b.pathDecryptWrite,
		},

		HelpSynopsis:    pathDecryptHelpSyn,
		HelpDescription: pathDecryptHelpDesc,
	}
}