@Override
    public Throwable fillInStackTrace() {
        if (!neverSample && Flags.verboseExceptionSampler().isSampled(getClass())) {
            super.fillInStackTrace();
        }
        return this;
    }
Returns whether the exception is raised when reading content-length header.
core/src/main/java/com/linecorp/armeria/common/ContentTooLargeException.java