docstr: Tests that adding additional draws doesn't change previous draws.
docstr_tok: ["Tests","that","adding","additional","draws","does","n't","change","previous","draws","."]
code: def test_adding_time_steps(self, random_type, mean, covar, seed):
      """Tests that adding additional draws doesn't change previous draws."""
      size = 10
      sample1 = self.evaluate(
          tff_rnd.mv_normal_sample(
              [size],
              mean=mean,
              covariance_matrix=covar,
              random_type=random_type,
              seed=seed,
          )
      )
  
      size2 = 16  # Must be > size.
      sample2 = self.evaluate(
          tff_rnd.mv_normal_sample(
              [size2],
              mean=mean,
              covariance_matrix=covar,
              random_type=random_type,
              seed=seed,
          )
      )
  
      np.testing.assert_array_almost_equal(
          sample1, sample2[:size], decimal=6
      )
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v2
  import tf_quant_finance
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 15 for calling the RandomTest obj's underlying member method code with example usage: obj.test_adding_time_steps(random_type, mean, covar, seed) without return types