static boolean isPackageAccess(final int modifiers) {
        return (modifiers & ACCESS_TEST) == 0;
    }
Returns whether a given set of modifiers implies package access.
@param modifiers to test
@return {@code true} unless {@code package}/{@code protected}/{@code private} modifier detected
fastexcel-core/src/main/java/cn/idev/excel/util/MemberUtils.java