code: def setUp(self):
      self.decays = np.array([1.0, 2.0, 0.2])
      self.intensities = np.array([0.3, 4.0, 2.0])
      self.hawkes_kernel_sumexp = HawkesKernelSumExp(
          self.intensities, self.decays
      )
  
file_path: tick/tick/hawkes/simulation/tests/hawkes_kernel_sum_exp_test.py
imports: import unittest
  import numpy
  from tick.hawkes import HawkesKernelSumExp
label_desc: Use image node_id 1 for calling the Test obj's underlying member method code with example usage: obj.setUp() without return types