sessionFromString function
Implementation
OSSession sessionFromString(String session) {
session = session.toLowerCase();
if (session == 'direct') {
return OSSession.DIRECT;
} else if (session == 'indirect') {
return OSSession.INDIRECT;
} else if (session == 'unattributed') {
return OSSession.UNATTRIBUTED;
}
return OSSession.DISABLED;
}