code: def projection_test_data(self):
      smoke_data = [
          dict(
              point=gs.array([[1.0, 0.0], [0.0, 1.0]]),
              expected=gs.array([[1.0, 0.0], [0.0, 1.0]]),
          ),
          dict(
              point=gs.array([[1.0 + 0.0j, 0.5j], [0.5j, 1.0 + 0.0j]]),
              expected=gs.array([[1.0, 0.0], [0.0, 1.0]]),
          ),
          dict(
              point=gs.array([[-1.0, 0.0], [0.0, -2.0]]),
              expected=gs.array([[gs.atol, 0.0], [0.0, gs.atol]]),
          ),
      ]
      return self.generate_tests(smoke_data)
  
imports: import geomstats.backend
  from geomstats.test.data import TestData
  from .complex_matrices import ComplexMatricesMetricTestData
  from .complex_riemannian_metric import ComplexRiemannianMetricTestData
  from .pullback_metric import PullbackDiffeoMetricTestData
label_desc: Use image node_id 2 for calling the HPDMatrices2TestData obj's underlying member method code with example usage: obj.projection_test_data() and returns: self