docstr: ...Test HawkesKernel0 string in list representation
          
docstr_tok: ["...","Test","HawkesKernel0","string","in","list","representation"]
code: def test_HawkesKernel0_repr(self):
      """...Test HawkesKernel0 string in list representation"""
      self.assertEqual(str([self.hawkes_kernel_0]), "[0]")
  
imports: import unittest
  from tick.hawkes import HawkesKernel0
label_desc: Use image node_id 3 for calling the Test obj's underlying member method code with example usage: obj.test_HawkesKernel0_repr() without return types