fromInt static method
- int n
Implementation
static NatBehavior? fromInt(int n) {
  switch (n) {
    case 0: return NatBehavior.endpointIndependent;
    case 1: return NatBehavior.addressDependent;
    case 2: return NatBehavior.addressAndPortDependent;
    default: return null;
  }
}