class_docstr: Add a random displacement of maximum size `stepsize` to each coordinate
  
  Calling this updates `x` in-place.
  
  Parameters
  ----------
  stepsize : float, optional
      Maximum stepsize in any dimension
  random_state : None or `np.random.RandomState` instance, optional
      The random number generator that generates the displacements
code: def __init__(self, stepsize=0.5, random_state=None):
      self.stepsize = stepsize
      self.random_state = check_random_state(random_state)
  
imports: from __future__ import division, print_function, absolute_import
  import numpy
  import math
  from numpy import cos, sin
  import scipy.optimize
  from scipy._lib._util import check_random_state
label_desc: Use image node_id 1 to create a new RandomDisplacement object from inherited base classes: object with example: obj = RandomDisplacement(stepsize, random_state)