code: def topKVertices(eigen, col, k):
      top = eigen.nlargest(n=k, columns=col)
      top = top.sort_values(by=col, ascending=False)
      return top["vertex"]
  
file_path: cugraph/python/cugraph/cugraph/tests/centrality/test_eigenvector_centrality.py
imports: import gc
  import pytest
  import networkx
  import cugraph
  from cugraph.testing import utils, UNDIRECTED_DATASETS, DEFAULT_DATASETS
  from cugraph.datasets import toy_graph, karate
label_desc: Use image node_id 2 for calling a global function with example usage: topKVertices(eigen, col, k) and returns: top