code: def __init__(self, *args, **kwargs):
      TestSolver.__init__(self, *args, dtype="float64", **kwargs)
  
file_path: tick/tick/solver/tests/gfb_test.py
imports: import unittest
  import numpy
  from tick.prox import ProxElasticNet, ProxL2Sq, ProxL1
  from tick.solver import GFB, AGD
  from tick.solver.tests import TestSolver
label_desc: Use image node_id 1 to create a new GDBTestFloat64 object from inherited base classes: TestSolver, GDBTest with example: obj = GDBTestFloat64()