type User struct {
		ID        int32 `gorm:"primaryKey"`
		Name      string
		CreatedBy *int32
		Creator   *User `gorm:"foreignKey:CreatedBy;references:ID"`
	}

	checkStructRelation(t, &User{}, Relation{
		Name: "Creator", Type: schema.BelongsTo, Schema: "User", FieldSchema: "User",
		References: []Reference{{"ID", "User", "CreatedBy", "User", "", false}},
	})
}

func TestBelongsToWithMixin(t *testing.T) {

    //                                                                         ===========
    protected final ColumnInfo _columnCreatedBy = cci("createdBy", "createdBy", null, null, String.class, "createdBy", null, false, false,
            false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);

    public void setCreatedBy_Terms(ConditionOptionCall<TermsAggregationBuilder> opLambda) {
        setCreatedBy_Terms("createdBy", opLambda, null);
    }

    public void setCreatedBy_Terms(ConditionOptionCall<TermsAggregationBuilder> opLambda, OperatorCall<BsFileAuthenticationCA> aggsLambda) {
        setCreatedBy_Terms("createdBy", opLambda, aggsLambda);
    }

      },
      "processType": {
        "type": "keyword"
      },
      "sortOrder": {
        "type": "integer"
      },
      "userAgent": {
        "type": "keyword"
      },
      "createdBy": {
        "type": "keyword"
      },
      "createdTime": {
        "type": "long"
      },
      "updatedBy": {
        "type": "keyword"
      },
      "updatedTime": {
        "type": "long"

		"id":         user.ID,
		"created_at": user.CreatedAt,
		"deleted_at": user.DeletedAt,
		"age":        user.Age,
		"birthday":   user.Birthday,
		"active":     true,
	}
	checkField(t, userSchema, reflectValue, values)

	// test setter
	newValues := map[string]interface{}{
		"name":       "valuer_and_setter_2",
		"id":         2,
		"created_at": time.Now(),
		"deleted_at": time.Now(),

    //                                                                         ===========
    protected final ColumnInfo _columnCreatedBy = cci("createdBy", "createdBy", null, null, String.class, "createdBy", null, false, false,
            false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);

    "mappings" : {
      "data_config" : {
        "properties" : {
          "available" : {
            "type" : "boolean"
          },
          "boost" : {
            "type" : "float"
          },
          "createdBy" : {
            "type" : "keyword"
          },
          "createdTime" : {
            "type" : "long"
          },
          "description" : {
            "type" : "text"
          },

  "fess_config.boost_document_rule" : {
    "aliases" : { },
    "mappings" : {
      "boost_document_rule" : {
        "properties" : {
          "boostExpr" : {
            "type" : "keyword"
          },
          "createdBy" : {
            "type" : "keyword"
          },
          "createdTime" : {
            "type" : "long"
          },
          "sortOrder" : {
            "type" : "integer"
          },

    /** Bad word ID for search filtering. */
    public String id;

    /** Suggest word for search filtering. */
    public String suggestWord;

    /** Creator username for search filtering. */
    public String createdBy;

    /** Creation time for search filtering. */
    public String createdTime;

    /** Version number for search filtering. */
    public String versionNo;

    /**

    /** The value of the label type. */
    public String value;

    /** The sort order of the label type. */
    public String sortOrder;

    /** The creator of the label type. */
    public String createdBy;

    /** The created time of the label type. */
    public String createdTime;

    /** The version number of the label type. */
    public String versionNo;

    /**
     * Clears the pager fields.