title: How to convert mongodb go driver's primitive.Timestamp type back to Golang time.Time type?
body: <p>mongo's go driver returns a bson timestamp as <a href="https://godoc.org/go.mongodb.org/mongo-driver/bson/primitive#Timestamp" rel="nofollow noreferrer">https://godoc.org/go.mongodb.org/mongo-driver/bson/primitive#Timestamp</a>  is there a way to convert it to <code>time.Time</code></p>