src/main/java/org/apache/commons/text/StrTokenizer.java [617:696]:
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                            final int quoteLen) {
        for (int i = 0; i < quoteLen; i++) {
            if (pos + i >= len || srcChars[pos + i] != srcChars[quoteStart + i]) {
                return false;
            }
        }
        return true;
    }

    /**
     * Gets the next token.
     *
     * @return The next String token
     * @throws NoSuchElementException if there are no more elements
     */
    @Override
    public String next() {
        if (hasNext()) {
            return tokens[tokenPos++];
        }
        throw new NoSuchElementException();
    }

    /**
     * Gets the index of the next token to return.
     *
     * @return The next token index
     */
    @Override
    public int nextIndex() {
        return tokenPos;
    }

    /**
     * Gets the next token from the String.
     * Equivalent to {@link #next()} except it returns null rather than
     * throwing {@link NoSuchElementException} when no tokens remain.
     *
     * @return The next sequential token, or null when no more tokens are found
     */
    public String nextToken() {
        if (hasNext()) {
            return tokens[tokenPos++];
        }
        return null;
    }

    /**
     * Gets the token previous to the last returned token.
     *
     * @return The previous token
     */
    @Override
    public String previous() {
        if (hasPrevious()) {
            return tokens[--tokenPos];
        }
        throw new NoSuchElementException();
    }

    /**
     * Gets the index of the previous token.
     *
     * @return The previous token index
     */
    @Override
    public int previousIndex() {
        return tokenPos - 1;
    }

    /**
     * Gets the previous token from the String.
     *
     * @return The previous sequential token, or null when no more tokens are found
     */
    public String previousToken() {
        if (hasPrevious()) {
            return tokens[--tokenPos];
        }
        return null;
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src/main/java/org/apache/commons/text/StringTokenizer.java [633:712]:
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            final int quoteLen) {
        for (int i = 0; i < quoteLen; i++) {
            if (pos + i >= len || srcChars[pos + i] != srcChars[quoteStart + i]) {
                return false;
            }
        }
        return true;
    }

    /**
     * Gets the next token.
     *
     * @return The next String token
     * @throws NoSuchElementException
     *             if there are no more elements
     */
    @Override
    public String next() {
        if (hasNext()) {
            return tokens[tokenPos++];
        }
        throw new NoSuchElementException();
    }

    /**
     * Gets the index of the next token to return.
     *
     * @return The next token index
     */
    @Override
    public int nextIndex() {
        return tokenPos;
    }

    /**
     * Gets the next token from the String. Equivalent to {@link #next()} except it returns null rather than throwing
     * {@link NoSuchElementException} when no tokens remain.
     *
     * @return The next sequential token, or null when no more tokens are found
     */
    public String nextToken() {
        if (hasNext()) {
            return tokens[tokenPos++];
        }
        return null;
    }

    /**
     * Gets the token previous to the last returned token.
     *
     * @return The previous token
     */
    @Override
    public String previous() {
        if (hasPrevious()) {
            return tokens[--tokenPos];
        }
        throw new NoSuchElementException();
    }

    /**
     * Gets the index of the previous token.
     *
     * @return The previous token index
     */
    @Override
    public int previousIndex() {
        return tokenPos - 1;
    }

    /**
     * Gets the previous token from the String.
     *
     * @return The previous sequential token, or null when no more tokens are found
     */
    public String previousToken() {
        if (hasPrevious()) {
            return tokens[--tokenPos];
        }
        return null;
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