ws-security-dom/src/main/java/org/apache/wss4j/dom/processor/EncryptedKeyProcessor.java [493:503]:
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    private Element getFirstElement(Element element) {
        for (Node currentChild = element.getFirstChild();
             currentChild != null;
             currentChild = currentChild.getNextSibling()
        ) {
            if (Node.ELEMENT_NODE == currentChild.getNodeType()) {
                return (Element) currentChild;
            }
        }
        return null;
    }
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ws-security-common/src/main/java/org/apache/wss4j/common/token/SecurityTokenReference.java [298:308]:
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    public Element getFirstElement() {
        for (Node currentChild = element.getFirstChild();
             currentChild != null;
             currentChild = currentChild.getNextSibling()
        ) {
            if (Node.ELEMENT_NODE == currentChild.getNodeType()) {
                return (Element) currentChild;
            }
        }
        return null;
    }
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