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// need to add the following pattern in line 79
private static final Pattern RFC6020_RECOMMENDED_FILENAME_PATTERN = Pattern.compile("([\\w-]+)@(\\d{4}-\\d{2}-\\d{2})(?:\\.yang)?", Pattern.CASE_INSENSITIVE);
// in the method synchronizeYangResources the following changes need to be added
// after line 123
final Map<String,String> metaDataMap = getModuleNameAndRevision(entry.getKey(), entry.getValue());
// after line 127 
yangResourceEntity.setModuleName(metaDataMap.get("moduleName"));
yangResourceEntity.setRevision(metaDataMap.get("revision"));
// at the end of the file add the following methods
    private static HashMap<String, String> getModuleNameAndRevision(final String sourceName, final String source) {
        final HashMap<String, String> metaDataMap = new HashMap<>();
        final var revisionSourceIdentifier =
                createIdentifierFromSourceName(checkNotNull(sourceName));

        YangTextSchemaSource tempYangTextSchemaSource = new YangTextSchemaSource(revisionSourceIdentifier) {
            @Override
            protected MoreObjects.ToStringHelper addToStringAttributes(
                    final MoreObjects.ToStringHelper toStringHelper) {
                return toStringHelper;
            }

            @Override
            public InputStream openStream() {
                return new ByteArrayInputStream(source.getBytes(StandardCharsets.UTF_8));
            }
        };
        try {
            final var dependencyInfo = YangModelDependencyInfo.forYangText(tempYangTextSchemaSource);
            metaDataMap.put("moduleName", dependencyInfo.getName());
            metaDataMap.put("revision", String.valueOf(dependencyInfo.getRevision()));
        } catch (IOException e) {
            e.printStackTrace();
        } catch (YangSyntaxErrorException e) {
            e.printStackTrace();
        }
        return metaDataMap;
    }

    private static RevisionSourceIdentifier createIdentifierFromSourceName(final String sourceName) {
        final var matcher = RFC6020_RECOMMENDED_FILENAME_PATTERN.matcher(sourceName);
        if (matcher.matches()) {
            return RevisionSourceIdentifier.create(matcher.group(1), Revision.of(matcher.group(2)));
        }
        return RevisionSourceIdentifier.create(sourceName);
    }