code: def _no_fuse(angles_1, angles_2):
      """Special case: do not perform fusion when both Y angles are zero:
          Rot(a, 0, b) Rot(c, 0, d) = Rot(a + b + c + d, 0, 0)
      The quaternion math itself will fail in this case without a conditional.
      """
      return stack(
          [
              angles_1[0] + angles_1[2] + angles_2[0] + angles_2[2],
              0.0,
              0.0,
          ]
      )
  
file_path: pennylane/pennylane/transforms/optimization/optimization_utils.py
imports: from functools import partial
  import numpy
  from pennylane.math import abs
  from pennylane.math import sum
  from pennylane.math import allclose, arccos, arctan2, cos, get_interface, is_abstract, sin, stack
  from pennylane.wires import Wires
  from pennylane.ops.identity import GlobalPhase
label_desc: Use image node_id 7 for calling a global function with example usage: _no_fuse(angles_1, angles_2) and returns: stack