toString method
Returns a string representation of the NAT behavior
Implementation
@override
String toString() {
return 'NatBehavior(mapping: $mappingBehavior, filtering: $filteringBehavior, '
'hairpinning: $supportsHairpinning, preservesPorts: $preservesPorts, '
'portMapping: $supportsPortMapping, lifetime: $mappingLifetime)';
}