class_docstr: Affine transform a * x + b
  
  Parameters
  ----------
  a: float
  b: float
class_docstr_tok: ["Affine","transform","a","*","x","+","b","Parameters","--","--","--","--","--","a",":","float","b",":","float"]
code: def forward(self, x: np.ndarray) -> np.ndarray:
      return self.a * x + self.b
  
imports: import uuid
  import itertools
  import numpy
  from scipy import stats
  import nevergrad.common.typing
  from .None import utils
label_desc: Use image node_id 2 for calling the Affine obj's underlying member method code with example usage: obj.forward(x) and returns: unknown