public String getSelectorString ( ) { StringBuilder sb = new StringBuilder ( ) ; for ( List < String > selector : selectors ) { if ( sb . length ( ) > 0 ) { sb . append ( "," ) ; } for ( String s : selector ) { if ( sb . length ( ) > 0 ) { sb . append ( " " ) ; } sb . append ( s ) ; } } return sb . toString ( ) ; }
Compiles the effective selector string .