try {
            return new Builder(
                    getUserProperties(), getSystemProperties(), getStartTime(), getTopDirectory(), getRootDirectory());
        } catch (IllegalStateException e) {
            return new Builder(getUserProperties(), getSystemProperties(), getStartTime(), getTopDirectory(), null);
        }
    }

    /**
     * Returns new builder from scratch.
     */

        return convertEmptyToNull(scriptType);
    }

    public void setScriptType(String value) {
        registerModifiedProperty("scriptType");
        this.scriptType = value;
    }

    public Long getStartTime() {
        checkSpecifiedProperty("startTime");
        return startTime;
    }

    public void setStartTime(Long value) {
        registerModifiedProperty("startTime");
        this.startTime = value;