public void addFieldQueryMust(String fieldName, String searchQuery) {

        addFieldQuery(fieldName, searchQuery, BooleanClause.Occur.MUST);
    }
public void addFieldQueryMust ( String fieldName , String searchQuery ) { addFieldQuery ( fieldName , searchQuery , BooleanClause . Occur . MUST ) ; }
Adds an individual query for a search field that MUST occur.<p>

If this is used, any setting made with {@link #setQuery(String)} and {@link #setField(String[])}
will be ignored and only the individual field search settings will be used.<p>

When combining occurrences of SHOULD, MUST and MUST_NOT, keep the following in mind:
All SHOULD clauses will be grouped and wrapped in one query,
all MUST and MUST_NOT clauses will be grouped in another query.
This means that at least one of the terms which are given as a SHOULD query must occur in the
search result.<p>

@param fieldName the field name
@param searchQuery the search query

@since 7.5.1