question: return the list of values associated with the given option . null signifiesthat the option was not present ; empty list signifies that no values were associated with this option . concode_field_sep List<String> nonOptionArgs concode_elem_sep Map<String,List<String>> optionArgs concode_field_sep void addOptionArg concode_elem_sep void addNonOptionArg concode_elem_sep boolean containsOption concode_elem_sep List<String> getNonOptionArgs concode_elem_sep Set<String> getOptionNames
target: List < String > function ( String arg0 ) { return this . optionArgs . get ( arg0 ) ; }