code: def operation_call(loops):
      range_it = range(loops)
  
      t0 = pyperf.perf_counter()
  
      for loops in range_it:
          _ = pyvips.Operation.call("black", 10, 10)
  
      return pyperf.perf_counter() - t0
  
label_desc: Use image node_id 1 for calling a global function with example usage: operation_call(loops) and returns: unknown