code: function () {
      var data = this.data;
      var sceneEl = this.el;
  
      if (data.cameraOverride) {
        // Specify which camera is the original camera (e.g., used by Inspector).
        this.cameraEl = data.cameraOverride;
      } else {
        // Default camera.
        this.cameraEl = sceneEl.camera.el;
        // Make sure A-Frame doesn't automatically remove this camera.
        this.cameraEl.removeAttribute('data-aframe-default-camera');
      }
      this.cameraEl.setAttribute('data-aframe-avatar-replayer-camera', '');
  
      sceneEl.removeEventListener('camera-set-active', this.setupCamera);
  
      this.configureHeadGeometry();
  
      // Create spectator camera for either if we are in spectator mode or toggling to it.
      this.initSpectatorCamera();
    }
docs: Grab a handle to the "original" camera.
  Initialize spectator camera and dummy geometry for original camera.