Fields that provide information about the sankey node.
The node can have other fields in addition to the fields described in this section.
The node's incoming links.
Array<Object>
Each object has the following structure:
{ index: Number, // The link's index weight: Number, // The link's weight node: String // The title of the link's source node }
The node's outgoing links.
{ index: Number, // The link's index weight: Number, // The link's weight node: String // The title of the link's target node }
The node's title.
String