src/main/java/org/intellimate/izou/sdk/frameworks/presence/provider/template/PresenceConstant.java
public void setPresence(boolean present) {
        if (this.present == present)
            return;
        this.present = present;
        updateVague();
        if (present) {
            firePresence(true);
        } else {
            fireLeaving();
        }
    }
public void setPresence(boolean present) {
        if (this.present == present)
            return;
        this.present = present;
        updateVague();
        if (present) {
            firePresence(true);
        } else {
            fireLeaving();
        }
    }
sets the presence
@param present true for presence, false if not