releaseMouseMoves() {
    if (this._eventMoveToken && this._eventUpToken) {
      this._eventMoveToken.remove();
      this._eventMoveToken = null;
      this._eventUpToken.remove();
      this._eventUpToken = null;
    }

    if (this._animationFrameID !== null) {
      cancelAnimationFramePolyfill(this._animationFrameID);
      this._animationFrameID = null;
    }

    if (this._isDragging) {
      this._isDragging = false;
      this._x = null;
      this._y = null;
    }
  }
These releases all of the listeners on document.body.