code: func NewSimpleQueryStringQuery(text string) *SimpleQueryStringQuery {
  	return &SimpleQueryStringQuery{
  		queryText:          text,
  		fields:             make([]string, 0),
  		fieldBoosts:        make(map[string]*float64),
  		fuzzyPrefixLength:  -1,
  		fuzzyMaxExpansions: -1,
  	}
  }
docs: // NewSimpleQueryStringQuery creates and initializes a new SimpleQueryStringQuery.