question: get the set of all alts mentioned by all atn configurations in this dfa state . concode_field_sep PredPrediction[] predicates concode_elem_sep int stateNumber concode_elem_sep SemanticContext pred concode_elem_sep DFAState[] edges concode_elem_sep int prediction concode_elem_sep int alt concode_elem_sep boolean isAcceptState concode_elem_sep boolean requiresFullContext concode_elem_sep ATNConfigSet configs concode_elem_sep LexerActionExecutor lexerActionExecutor concode_field_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String toString concode_elem_sep String toString
target: Set < Integer > function ( ) { Set < Integer > loc0 = new HashSet < Integer > ( ) ; if ( configs != null ) { for ( ATNConfig loc1 : configs ) { loc0 . add ( loc1 . alt ) ; } } if ( loc0 . isEmpty ( ) ) return null ; return loc0 ; }