Type Alias XRHandJoint

    XRHandJoint:
        | "wrist"
        | "thumb-metacarpal"
        | "thumb-phalanx-proximal"
        | "thumb-phalanx-distal"
        | "thumb-tip"
        | "index-finger-metacarpal"
        | "index-finger-phalanx-proximal"
        | "index-finger-phalanx-intermediate"
        | "index-finger-phalanx-distal"
        | "index-finger-tip"
        | "middle-finger-metacarpal"
        | "middle-finger-phalanx-proximal"
        | "middle-finger-phalanx-intermediate"
        | "middle-finger-phalanx-distal"
        | "middle-finger-tip"
        | "ring-finger-metacarpal"
        | "ring-finger-phalanx-proximal"
        | "ring-finger-phalanx-intermediate"
        | "ring-finger-phalanx-distal"
        | "ring-finger-tip"
        | "pinky-finger-metacarpal"
        | "pinky-finger-phalanx-proximal"
        | "pinky-finger-phalanx-intermediate"
        | "pinky-finger-phalanx-distal"
        | "pinky-finger-tip"

    The XRHand interface is pair iterator (an ordered map) with the key being the hand joints (XRHandJoint) and the value being an XRJointSpace.