class_docstr: Additive Gaussian noise to actions.
  
  Each action must be numpy.ndarray.
  
  Args:
      scale (float or array_like of floats): Scale parameter.
      low (float, array_like of floats, or None): Lower bound of action
          space used to clip an action after adding a noise. If set to None,
          clipping is not performed on lower edge.
      high (float, array_like of floats, or None): Higher bound of action
          space used to clip an action after adding a noise. If set to None,
          clipping is not performed on upper edge.
code: def __repr__(self):
      return "AdditiveGaussian(scale={}, low={}, high={})".format(
          self.scale, self.low, self.high
      )
  
imports: import numpy
  from chainerrl import explorer
label_desc: Use image node_id 3 for calling the AdditiveGaussian obj's underlying member method code with example usage: obj.__repr__() and returns: str