setDefaultContagiousness method
Implementation
void setDefaultContagiousness(int defaultContagiousness) {
if (!(defaultContagiousness >= Contagiousness.NONE &&
defaultContagiousness <= Contagiousness.HIGH)) {
throw ArgumentError('defaultContagiousness must be >=0 and <=2');
}
_defaultContagiousness = defaultContagiousness;
}