code: func (q *MatchQuery) MaxExpansions(maxExpansions int) *MatchQuery {
  	q.maxExpansions = &maxExpansions
  	return q
  }
docs: // MaxExpansions is used with fuzzy or prefix type queries. It specifies
  // the number of term expansions to use. It defaults to unbounded so that
  // its recommended to set it to a reasonable value for faster execution.