code: def cluster_tetra():
      template_clustering(
          4, FCPS_SAMPLES.SAMPLE_TETRA, [type_link.CENTROID_LINK]
      )
  
imports: from pyclustering.cluster import cluster_visualizer
  from pyclustering.cluster.agglomerative import agglomerative, type_link
  from pyclustering.utils import read_sample
  from pyclustering.utils import timedcall
  from pyclustering.samples.definitions import SIMPLE_SAMPLES, FCPS_SAMPLES
label_desc: Use image node_id 14 for calling a global function with example usage: cluster_tetra() without return types