question: public static AccessibilityNodeInfoCompat searchFromInOrderTraversal ( Context context , AccessibilityNodeInfoCompat root , NodeFilter filter , int direction ) { AccessibilityNodeInfoCompat currentNode = NodeFocusFinder . focusSearch ( root , direction ) ; final HashSet < AccessibilityNodeInfoCompat > seenNodes = new HashSet < AccessibilityNodeInfoCompat > ( ) ; while ( ( currentNode != null ) && ! seenNodes . contains ( currentNode ) && ! filter . accept ( context , currentNode ) ) { seenNodes . add ( currentNode ) ; currentNode = NodeFocusFinder . focusSearch ( currentNode , direction ) ; } AccessibilityNodeInfoUtils . recycleNodes ( seenNodes ) ; return currentNode ; }
target:  Performs in-order traversal from a given node in a particular direction until a node matching the specified filter is reached.