question: returns value mapped to the index or null if mapping does n't exist . concode_field_sep int nextIndex concode_elem_sep Map<Integer,String> indexMapping concode_elem_sep Map<String,Integer> valueMapping concode_elem_sep long serialVersionUID concode_field_sep int getSize concode_elem_sep int getIndex
target: String function ( int arg0 ) { return indexMapping . get ( arg0 ) ; }