## DiscreteGroupItem class

Represents an item of custom grouped field.

```javascript
class DiscreteGroupItem;
```


## Constructors

| Constructor | Description |
| --- | --- |
| [constructor(string, number[])](#constructor-string-numberarray-)| The constructor of custom group item of pivot field. |

## Methods

| Method | Description |
| --- | --- |
| [isNull()](#isNull--)| Checks whether the implementation object is null. |


### constructor(string, number[]) {#constructor-string-numberarray-}

The constructor of custom group item of pivot field.

```javascript
constructor(name: string, itemIndexes: number[]);
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| name | string | The name of group item |
| itemIndexes | number[] | All indexes to the items of base pivot field. |

### isNull() {#isNull--}

Checks whether the implementation object is null.

```javascript
isNull() : boolean;
```