in stetho/src/main/java/com/facebook/stetho/inspector/elements/android/AccessibilityNodeInfoWrapper.java [91:129]
  public static String getIgnoredReasons(View view) {
    int important = ViewCompat.getImportantForAccessibility(view);
    if (important == ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO) {
      return "View has importantForAccessibility set to 'NO'.";
    }
    if (important == ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS) {
      return "View has importantForAccessibility set to 'NO_HIDE_DESCENDANTS'.";
    }
    ViewParent parent = view.getParent();
    while (parent instanceof View) {
      if (ViewCompat.getImportantForAccessibility((View) parent)
              == ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS) {
        return "An ancestor View has importantForAccessibility set to 'NO_HIDE_DESCENDANTS'.";
      }
      parent = parent.getParent();
    }
    AccessibilityNodeInfoCompat node = createNodeInfoFromView(view);
    try {
      if (!node.isVisibleToUser()) {
        return "View is not visible.";
      }
      if (AccessibilityUtil.isAccessibilityFocusable(node, view)) {
        return "View is actionable, but has no description.";
      }
      if (AccessibilityUtil.hasText(node)) {
        return "View is not actionable, and an ancestor View has co-opted its description.";
      }
      return "View is not actionable and has no description.";
    } finally {
      node.recycle();
    }
  }