class_docstr: Very simple 2D norm-1 function with optimal value at (x_optimum, 100)
class_docstr_tok: ["Very","simple","2D","norm-1","function","with","optimal","value","at","(","x_optimum",",","100",")"]
code: def _multifunc(self, x: np.ndarray) -> np.ndarray:
      return np.abs(x - self._optimum)
  
imports: import hashlib
  import itertools
  import numpy
  import nevergrad
  from nevergrad.common import tools
  import nevergrad.common.typing
  from .base import ExperimentFunction
  from .pbt import PBT
  from .None import utils
  from .None import corefuncs
label_desc: Use image node_id 2 for calling the FarOptimumFunction obj's underlying member method code with example usage: obj._multifunc(x) and returns: np