validateBannedCharacters(
                    EMPTY, "version", problems, errOn31, Version.V20, m.getVersion(), null, m, ILLEGAL_VERSION_CHARS);
            validate20ProperSnapshotVersion("version", problems, errOn31, Version.V20, m.getVersion(), null, m);
            if (hasExpression(m.getVersion())) {
                Severity versionExpressionSeverity = Severity.ERROR;