Godeps/_workspace/src/gopkg.in/mgo.v2/session.go
func (c *Collection) FindId(id interface{}) *Query {
	return c.Find(bson.D{{"_id", id}})
}
func (c *Collection) FindId(id interface{}) *Query {
	return c.Find(bson.D{{"_id", id}})
}
func ( c * Collection ) FindId ( id interface { } ) * Query { return c . Find ( bson . D { { " " , id } } ) }
// FindId is a convenience helper equivalent to:
//
//     query := collection.Find(bson.M{"_id": id})
//
// See the Find method for more details.
FindId is a convenience helper equivalent to : query : = collection . Find ( bson . M { _id : id } ) See the Find method for more details .