oak-core/src/main/java/org/apache/jackrabbit/oak/query/SQL2Parser.java [1090:1111]:
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    private void addExpected(String token) {
        if (expected != null) {
            expected.add(token);
        }
    }

    private void initialize(String query) throws ParseException {
        if (query == null) {
            query = "";
        }
        statement = query;
        int len = query.length() + 1;
        char[] command = new char[len];
        int[] types = new int[len];
        len--;
        query.getChars(0, len, command, 0);
        command[len] = ' ';
        int startLoop = 0;
        for (int i = 0; i < len; i++) {
            char c = command[i];
            int type = 0;
            switch (c) {
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oak-core/src/main/java/org/apache/jackrabbit/oak/query/xpath/XPathToSQL2Converter.java [928:949]:
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    private void addExpected(String token) {
        if (expected != null) {
            expected.add(token);
        }
    }

    private void initialize(String query) throws ParseException {
        if (query == null) {
            query = "";
        }
        statement = query;
        int len = query.length() + 1;
        char[] command = new char[len];
        int[] types = new int[len];
        len--;
        query.getChars(0, len, command, 0);
        command[len] = ' ';
        int startLoop = 0;
        for (int i = 0; i < len; i++) {
            char c = command[i];
            int type = 0;
            switch (c) {
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