src/org/apache/xerces/dom/AttrImpl.java [1159:1178]:
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    void checkNormalizationAfterInsert(ChildNode insertedChild) {
        // See if insertion caused this node to be unnormalized.
        if (insertedChild.getNodeType() == Node.TEXT_NODE) {
            ChildNode prev = insertedChild.previousSibling();
            ChildNode next = insertedChild.nextSibling;
            // If an adjacent sibling of the new child is a text node,
            // flag this node as unnormalized.
            if ((prev != null && prev.getNodeType() == Node.TEXT_NODE) ||
                (next != null && next.getNodeType() == Node.TEXT_NODE)) {
                isNormalized(false);
            }
        }
        else {
            // If the new child is not normalized,
            // then this node is inherently not normalized.
            if (!insertedChild.isNormalized()) {
                isNormalized(false);
            }
        }
    } // checkNormalizationAfterInsert(ChildNode)
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src/org/apache/xerces/dom/ParentNode.java [977:996]:
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    void checkNormalizationAfterInsert(ChildNode insertedChild) {
        // See if insertion caused this node to be unnormalized.
        if (insertedChild.getNodeType() == Node.TEXT_NODE) {
            ChildNode prev = insertedChild.previousSibling();
            ChildNode next = insertedChild.nextSibling;
            // If an adjacent sibling of the new child is a text node,
            // flag this node as unnormalized.
            if ((prev != null && prev.getNodeType() == Node.TEXT_NODE) ||
                (next != null && next.getNodeType() == Node.TEXT_NODE)) {
                isNormalized(false);
            }
        }
        else {
            // If the new child is not normalized,
            // then this node is inherently not normalized.
            if (!insertedChild.isNormalized()) {
                isNormalized(false);
            }
        }
    } // checkNormalizationAfterInsert(ChildNode)
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