in commons-fileupload2-core/src/main/java/org/apache/commons/fileupload2/core/MultipartInput.java [277:286]
private void findSeparator() {
pos = MultipartInput.this.findSeparator();
if (pos == -1) {
if (tail - head > keepRegion) {
pad = keepRegion;
} else {
pad = tail - head;
}
}
}