Method getFanIn

src/index.ts:1557–1559

* Fan-in (incoming edge count) for many nodes at once — the "hub" signal, * without a query per node. See QueryBuilder.countIncomingEdges.

(ids: readonly string[])

   * without a query per node. See {@link QueryBuilder.countIncomingEdges}.
   */
  getFanIn(ids: readonly string[]): Map<string, number> {
    return this.queries.countIncomingEdges(ids);
  }

  /**
   * Incoming edges for many target nodes at once — the mirror of