/** {@inheritDoc} */
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
// VERSION
in.readByte();
// SUPER
super.readExternal(in);
// NUMBER OF ENTRIES
int size = in.readInt();
setUp(size);
// ENTRIES
while (size-- > 0) {
double key = in.readDouble();
int val = in.readInt();
put(key, val);
}
}