httpclient5/src/main/java/org/apache/hc/client5/http/utils/DateUtils.java [298:309]:
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            final MessageHeaders message1,
            final MessageHeaders message2,
            final String headerName) {
        if (message1 != null && message2 != null) {
            final Header dateHeader1 = message1.getFirstHeader(headerName);
            if (dateHeader1 != null) {
                final Header dateHeader2 = message2.getFirstHeader(headerName);
                if (dateHeader2 != null) {
                    final Date date1 = parseDate(dateHeader1.getValue());
                    if (date1 != null) {
                        final Date date2 = parseDate(dateHeader2.getValue());
                        if (date2 != null) {
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httpclient5/src/main/java/org/apache/hc/client5/http/utils/DateUtils.java [337:348]:
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            final MessageHeaders message1,
            final MessageHeaders message2,
            final String headerName) {
        if (message1 != null && message2 != null) {
            final Header dateHeader1 = message1.getFirstHeader(headerName);
            if (dateHeader1 != null) {
                final Header dateHeader2 = message2.getFirstHeader(headerName);
                if (dateHeader2 != null) {
                    final Date date1 = parseDate(dateHeader1.getValue());
                    if (date1 != null) {
                        final Date date2 = parseDate(dateHeader2.getValue());
                        if (date2 != null) {
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