public void setLastActive(Timestamp lastActive) {
        this.lastActive = lastActive;
    }
Sets the date and time that this user was last active. This value is
expected to be set automatically via queries, derived from user history
records. It does NOT correspond to an actual column, and values set
manually through invoking this function will not persist.

@param lastActive
    The date and time that this user was last active, or null if this
    user has never logged in.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/user/UserModel.java