I have a JSON which can be also accessed through <http://myjson.com/kfd04>

```
{
  "response": [
    {
      "id": "1",
      "customer": "Star Wars",
      "project": "1977"
    },
    {
      "id": "2",
      "customer": "Star Wars",
      "project": "1985"
    },
    {
      "id": "3",
      "customer": "The Matrix",
      "project": "1999"
    },
    {
      "id": "4",
      "customer": "Inception",
      "project": "2010"
    },
    {
      "id": "5",
      "customer": "Interstellar",
      "project": "2014"
    }
  ]
}

```

I want to only render the unique customers this is my code so far. It displays all the customers. The `responseData` contains the "response" array of objects.

```
<Picker
  mode="dialog"
  selectedValue={this.state.customerName}
  onValueChange={(itemValue, itemIndex) => {
    this.setState({ customerName: itemValue });
    }
  }
  >
    {
      this.state.responseData.map((item) => (
      <Picker.Item label={item.customer} value={item.customer} key={item.customer} />))
    }
</Picker>

```