This class implements an I3S Node. In CesiumJS each I3SNode creates a Cesium3DTile.
Do not construct this directly, instead access tiles through I3SLayer.
Members
readonly children : Array.<I3SNode>
    Gets the children nodes.
    Gets the I3S data for this object.
readonly featureData : Array.<I3SFeature>
    Gets the collection of features.
readonly fields : Array.<I3SField>
    Gets the collection of fields.
readonly geometryData : Array.<I3SGeometry>
    Gets the collection of geometries.
readonly layer : I3SLayer
    Gets the parent layer.
readonly parent : I3SNode|undefined
    Gets the parent node.
readonly resource : Resource
    Gets the resource for the node.
readonly tile : Cesium3DTile
    Gets the Cesium3DTile for this node.
Methods
    Returns the fields for a given feature
    
| Name | Type | Description | 
|---|---|---|
| featureIndex | Number | Index of the feature whose attributes we want to get | 
Returns:
    Object containing field names and their values
    
    Returns the fields for a given picked position
    
| Name | Type | Description | 
|---|---|---|
| pickedPosition | Cartesian3 | The picked position | 
Returns:
    Object containing field names and their values
    
    Loads the node fields.
Returns:
    A promise that is resolved when the I3S Node fields are loaded
    
