filemonitor/src/main/java/org/apache/servicemix/kernel/filemonitor/FileMonitor.java [465:479]:
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    protected void interpolation(Properties properties) {
        for (Enumeration e = properties.propertyNames(); e.hasMoreElements();) {
            String key = (String)e.nextElement();
            String val = properties.getProperty(key);
            Matcher matcher = Pattern.compile("\\$\\{([^}]+)\\}").matcher(val);
            while (matcher.find()) {
                String rep = System.getProperty(matcher.group(1));
                if (rep != null) {
                    val = val.replace(matcher.group(0), rep);
                    matcher.reset(val);
                }
            }
            properties.put(key, val);
        }
    }
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gshell/gshell-features/src/main/java/org/apache/servicemix/kernel/gshell/features/internal/RepositoryImpl.java [152:166]:
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    protected void interpolation(Properties properties) {
        for (Enumeration e = properties.propertyNames(); e.hasMoreElements();) {
            String key = (String)e.nextElement();
            String val = properties.getProperty(key);
            Matcher matcher = Pattern.compile("\\$\\{([^}]+)\\}").matcher(val);
            while (matcher.find()) {
                String rep = System.getProperty(matcher.group(1));
                if (rep != null) {
                    val = val.replace(matcher.group(0), rep);
                    matcher.reset(val);
                }
            }
            properties.put(key, val);
        }
    }
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