title: Access section data from section items in react native SectionList
body: <p>I need to access the information regarding the section (index, value) inside the renderItem in react-native SectionList. According to <a href="http://docs.w3cub.com/react_native/sectionlist/#renderitem" rel="nofollow noreferrer">http://docs.w3cub.com/react_native/sectionlist/#renderitem</a> section details can be passed via renderItem function. But in below code except the item all other values will be set to undefined. Is there any other possible way of doing it?</p>
  
  <pre><code>    render(){
              return(
                  &lt;SectionList
                      sections={this.props.itemList}
                      renderItem={(item,section) =&gt; this._renderNewItem(item,section)}
                      renderSectionHeader={this._renderSectionHeader}
                      keyExtractor={(item) =&gt; item.id}
                  /&gt;
              )
          }
  
  _renderNewItem(item,section){
          console.log(item, "   ", section)
      }
  </code></pre>
  
  <p>Sample data structure</p>
  
  <p><a href="https://i.stack.imgur.com/NfvTp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NfvTp.png" alt="enter image description here"></a></p>