} else {
/* Sum commit for each pair file that the pair dev has commited. */
if (edgeWeigth.containsKey(pairUser.toStringUserAndUser2())) {
// edgeName = user + user2
edgeWeigth.put(pairUser.toStringUserAndUser2(), edgeWeigth.get(pairUser.toStringUserAndUser2()) + Integer.valueOf(columns[4]));
} else if (edgeWeigth.containsKey(pairUser.toStringUser2AndUser())) {
// edgeName = user2 + user
edgeWeigth.put(pairUser.toStringUser2AndUser(), edgeWeigth.get(pairUser.toStringUser2AndUser()) + Integer.valueOf(columns[4]));
} else {
edgeWeigth.put(edgeName, Integer.valueOf(columns[4]));
}