The read-only XRViewerPose property views returns an array which contains every XRView which must be rendered in order to fully represent the scene from the viewpoint defined by the viewer pose. For monoscopic devices, this array contains a single view.
Warning: There is no guarantee that the number of views will remain constant over the lifetime of an XRSession. For each frame, you should always use the current length of this array rather than caching the value.
Stereo views require two views to render properly, with the left eye's view having its eye set to the string left and the right eye's view a value of right.