question: public BoolQueryBuilder minimumNumberShouldMatch ( int minimumNumberShouldMatch ) { this . minimumShouldMatch = Integer . toString ( minimumNumberShouldMatch ) ; return this ; }
target:  Specifies a minimum number of the optional (should) boolean clauses which must be satisfied. <p/> <p>By default no optional clauses are necessary for a match (unless there are no required clauses).  If this method is used, then the specified number of clauses is required. <p/> <p>Use of this method is totally independent of specifying that any specific clauses are required (or prohibited).  This number will only be compared against the number of matching optional clauses.