question: public void addCategoryLimitations ( boolean include , String ... categoryVelocityVarNames ) { query . append ( " " + ( include ? "+" : "-" ) + "(" ) ; for ( String categoryVelocityVarName : categoryVelocityVarNames ) { query . append ( "categories:" + escapeValue ( categoryVelocityVarName ) + " " ) ; } query . append ( ")" ) ; }
target:  Limit the results of the query to certain categories