if (this.state.makingNavigatorRequest) {
      this._toFocusOnNavigationComplete = item;
    }
Boolean value that indicates whether the interactive pop gesture is
enabled. This is useful for enabling/disabling the back swipe navigation
gesture.

If this prop is not provided, the default behavior is for the back swipe
gesture to be enabled when the navigation bar is shown and disabled when
the navigation bar is hidden. Once you've provided the
`interactivePopGestureEnabled` prop, you can never restore the default
behavior.