Interface NodeFilterOptions

api.line({
  sort: (a, b) => a.properties.seasonNumber - b.properties.seasonNumber,
  sort: 'seasonNumber', // same as above
  reverse: true, // sort descending
})

api.ego({
  filter: (node) => node.properties.Level === 1, // Find the root node[s]
})

const rootNodes = // nodes that are the root node[s]
api.ego ({
  nodes: rootNodes,
  nodes: rootNodes.map(n => n.id) // same as above
})