code: def generate_preset_test_quaternions():
      """Generates pre-set test quaternions."""
      angles = generate_preset_test_euler_angles()
      preset_quaternion = quaternion.from_euler(angles)
      return preset_quaternion
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import itertools
  import math
  import numpy
  from scipy import stats
  from six.moves import range
  import tensorflow.compat.v2
  from tensorflow_graphics.geometry.transformation import axis_angle
  from tensorflow_graphics.geometry.transformation import quaternion
  from tensorflow_graphics.geometry.transformation import rotation_matrix_2d
  from tensorflow_graphics.geometry.transformation import rotation_matrix_3d
label_desc: Use image node_id 6 for calling a global function with example usage: generate_preset_test_quaternions() and returns: preset_quaternion