returns immutable list of all known versions . concode_field_sep List<Version> SORTED_VERSIONS concode_field_sep Version randomVersion concode_elem_sep Version getPreviousVersion concode_elem_sep Version getPreviousVersion concode_elem_sep boolean isSnapshot concode_elem_sep Version getFirstVersion concode_elem_sep Version randomVersionBetween
List < Version > function ( ) { return Collections . unmodifiableList ( SORTED_VERSIONS ) ; }