question: returns the last value corresponding to the specified field parsed as an http date , or null if either the field is absent or can not be parsed as a date . concode_field_sep List<String> namesAndValues concode_elem_sep String[] namesAndValues concode_field_sep Builder add concode_elem_sep Builder add concode_elem_sep Builder addLenient concode_elem_sep Builder addLenient concode_elem_sep Builder set concode_elem_sep List<String> values concode_elem_sep void checkNameAndValue concode_elem_sep Builder newBuilder concode_elem_sep Builder removeAll concode_elem_sep Set<String> names concode_elem_sep int size concode_elem_sep Headers build concode_elem_sep int hashCode concode_elem_sep String get concode_elem_sep String get concode_elem_sep String get concode_elem_sep boolean equals concode_elem_sep Headers of concode_elem_sep Headers of concode_elem_sep String name concode_elem_sep Map<String,List<String>> toMultimap concode_elem_sep String toString concode_elem_sep String value
target: Date function ( String arg0 ) { String loc0 = get ( arg0 ) ; return loc0 != null ? HttpDate . parse ( loc0 ) : null ; }