message: Fix an error calling a function on something that is a field
diff: @@ -436,7 +436,7 @@ export default class SummaryPanelNode extends React.Component<SummaryPanelPropTy
  const isServiceNode = node.data(CyNode.nodeType) === NodeType.SERVICE;
  let serviceWithUnknownSource: boolean = false;
  if (isServiceNode) {
  - for (const n of node.incomers()) {
  + for (const n of node.incomers) {
  if (NodeType.UNKNOWN === n.data(CyNode.nodeType)) {
  serviceWithUnknownSource = true;
  break;
  