code: func (q *MultiMatchQuery) MaxExpansions(maxExpansions int) *MultiMatchQuery {
  	q.maxExpansions = &maxExpansions
  	return q
  }
docs: // MaxExpansions is the number of term expansions to use when using fuzzy
  // or prefix type query. It defaults to unbounded so it's recommended
  // to set it to a reasonable value for faster execution.