code: def Roty(theta):
      r"""One-qubit rotation about the y axis.
  
      Args:
          theta (float): rotation angle
      Returns:
          array: unitary 2x2 rotation matrix :math:`e^{-i \sigma_y \theta/2}`
      """
      return (
          qml.math.array(
              [
                  [
                      qml.math.cos(0.5 * theta),
                      -qml.math.sin(0.5 * theta),
                  ],
                  [
                      qml.math.sin(0.5 * theta),
                      qml.math.cos(0.5 * theta),
                  ],
              ],
              like=theta,
          )
          + 0j
      )
  
imports: import pennylane
  from pennylane import numpy
  from pennylane import math
label_desc: Use image node_id 3 for calling a global function with example usage: Roty(theta) and returns: unknown