code: def summation(x: tp.ArrayLike) -> float:
      return sum(x)
  
file_path: nevergrad/nevergrad/optimization/test_tabu.py
imports: import pytest
  import numpy
  import sys
  from scipy import stats
  import nevergrad
  import nevergrad.common.typing
label_desc: Use image node_id 2 for calling a global function with example usage: summation(x) and returns: sum