class_docstr: Abstract simulation class. It does nothing besides printing and
  verbosing.
  
  Parameters
  ----------
  seed : `int`
      The seed of the random number generator
  
  verbose : `bool`
      If True, print things
  
  Attributes
  ----------
  time_start : `str`
      Start date of the simulation
  
  time_elapsed : `int`
      Duration of the simulation, in seconds
  
  time_end : `str`
      End date of the simulation
code: def _start_simulation(self):
      self._set("time_start", self._get_now())
      self._set("_time_start", time())
      if self.verbose:
          msg = "Launching simulation using {class_}...".format(
              class_=self.name
          )
          print("-" * len(msg))
          print(msg)
  
file_path: tick/tick/base/simulation/simu.py
imports: from abc import ABC, abstractmethod
  from time import time
  import numpy
  from tick.base import Base
label_desc: Use image node_id 3 for calling the Simu obj's underlying member method code with example usage: obj._start_simulation() without return types