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: gen_type_activitystreams_activity.go
    path of file: ./repos/gotosocial/vendor/github.com/superseriousbusiness/activity/streams/impl/activitystreams/type_activity
    
    the code of the file until where you have to start completion: // Code generated by astool. DO NOT EDIT.

package typeactivity

import (
	"fmt"
	vocab "github.com/superseriousbusiness/activity/streams/vocab"
	"strings"
)

// An Activity is a subtype of Object that describes some form of action that may
// happen, is currently
    
func (this ActivityStreamsActivity) helperJSONLDContext(i jsonldContexter, toMerge map[string]string) map[string]string {
	if i == nil {
		return toMerge
	}
	for k, v := range i.JSONLDContext() {
		/*
		   Since the literal maps in this function are determined at
		   code-generation time, this loop should not overwrite an existing key with a
		   new value.
		*/
		toMerge[k] = v
	}
	return toMerge
}