public void setAccessWindowStart(Time accessWindowStart) {
        this.accessWindowStart = accessWindowStart;
    }
Sets the time each day after which this user account may be used. The
time given must be in local time according to the time zone set with
setTimeZone().

@param accessWindowStart
    The time each day after which this user account may be used, or null
    if this restriction does not apply.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/apache/guacamole/auth/jdbc/user/UserModel.java