func (t *Iterator) Next(dst interface{}) (*Key, error) {
	k, e, err := t.next()
	if err != nil {
		return nil, err
	}
	if dst != nil && !t.q.keysOnly {
		err = loadEntity(dst, e)
	}
	return k, err
}
func (t *Iterator) Next(dst interface{}) (*Key, error) {
	k, e, err := t.next()
	if err != nil {
		return nil, err
	}
	if dst != nil && !t.q.keysOnly {
		err = loadEntity(dst, e)
	}
	return k, err
}
func ( t * Iterator ) Next ( dst interface { } ) ( * Key , error ) { k , e , err := t . next ( ) if err != nil { return nil , err } if dst != nil && ! t . q . keysOnly { err = loadEntity ( dst , e ) } return k , err }
// Next returns the key of the next result. When there are no more results,
// Done is returned as the error.
//
// If the query is not keys only and dst is non-nil, it also loads the entity
// stored for that key into the struct pointer or PropertyLoadSaver dst, with
// the same semantics and possible errors as for the Get function.
Next returns the key of the next result . When there are no more results Done is returned as the error . If the query is not keys only and dst is non - nil it also loads the entity stored for that key into the struct pointer or PropertyLoadSaver dst with the same semantics and possible errors as for the Get function .