public static String getExpressionWithoutOutsideParentheses(final String value) {
        int parenthesesOffset = getParenthesesOffset(value);
        return 0 == parenthesesOffset ? value : value.substring(parenthesesOffset, value.length() - parenthesesOffset);
    }
@Test
    void assertGetExpressionWithoutOutsideParentheses() {
        assertThat(SQLUtils.getExpressionWithoutOutsideParentheses("((a + b*c))"), is("a + b*c"));
        assertThat(SQLUtils.getExpressionWithoutOutsideParentheses(""), is(""));
    }