docstr: Creates a random quaternion with random shape.
docstr_tok: ["Creates","a","random","quaternion","with","random","shape","."]
code: def _pick_random_quaternion(self):
      """Creates a random quaternion with random shape."""
      tensor_size = np.random.randint(3)
      tensor_shape = np.random.randint(
          1, 10, size=(tensor_size)
      ).tolist()
      return np.random.normal(size=tensor_shape + [4])
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_graphics.math.interpolation import slerp
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 1 for calling the SlerpTest obj's underlying member method code with example usage: obj._pick_random_quaternion() and returns: np