class_docstr: The fake KVStore client.
  
  This is to mimic the distributed KVStore client. It's used for DistGraph
  in standalone mode.
class_docstr_tok: ["The","fake","KVStore","client",".","This","is","to","mimic","the","distributed","KVStore","client",".","It","'s","used","for","DistGraph","in","standalone","mode","."]
docstr: Compute the union of two mask arrays in the KVStore.
docstr_tok: ["Compute","the","union","of","two","mask","arrays","in","the","KVStore","."]
code: def union(self, operand1_name, operand2_name, output_name):
      """Compute the union of two mask arrays in the KVStore."""
      self._data[output_name][:] = (
          self._data[operand1_name] | self._data[operand2_name]
      )
  
imports: from ..None import backend
label_desc: Use image node_id 18 for calling the KVClient obj's underlying member method code with example usage: obj.union(operand1_name, operand2_name, output_name) without return types