parameters: (self)
docstring: send command to make robot stop
          :return:
docstring_summary: send command to make robot stop
          :return:
docstring_tokens: send command to make robot stop : return :
function: def brake(self):
          """
          send command to make robot stop
          :return:
          """
          self.vel_pub.publish(geometry_msgs.msg.Twist())
function_tokens: def brake ( self ) : self . vel_pub . publish ( geometry_msgs . msg . Twist ( ) )