this.emptySource = emptySource;
    }

    public void setId(final String id) {
        this.id = id;
    }

    public Map<String, Object> toEmptyMap() {
        return emptySource;
    }

    protected Map<String, Object> createEmptyMap() {
        final Map<String, Object> map = new HashMap<>();
        map.put(FieldNames.TEXT, StringUtil.EMPTY);