Objc scriptingbridge how open new Finder window in a specific folder - objective-c

Question

I want to open a new Finder window of a specific size in a specific position and displaying a specific folder.
In ScriptingBridge (XCode 6, Mavericks 9.4) I can open a new Finder window and have figured out how to read the URL of the folder it opens. But I am really struggling with how to set the folder to something different.
I have tried to assign the window a 'target' SBObject initialised with a 'URL' property.
but the URL property is readonly although 'target' seems not to be. I've used 'get' to ensure there is a FinderFolder object and a FinderFinderWindow object.
I've tried using a dictionary of properties with a URL key and creating a 'folder'.
FinderFolder *folder = [[[_finder classForScriptingClass:#"folder"] alloc]
initWithProperties:dict];
[[_finder folders] addObject:folder];
I have read the Apple docs and looked for examples all over but cannot find an instance of someone assigning the folder path.

Answer 1

// open folder "Documents" of home folder
FinderFolder *theHomeFolder = [theFinder home];
NSLog(#"theHomeFolder: %#",theHomeFolder);
SBElementArray * theHomeFolderFolders = [theHomeFolder folders];
NSLog(#"theHomeFolderFolders: %#",theHomeFolderFolders);
FinderFolder *theDocsFolder = [theHomeFolderFolders objectWithName:#"Documents"];
NSLog(#"theDocsFolder: %#",theDocsFolder);
[theDocsFolder openUsing:nil withProperties:nil];
FinderFinderWindow * docsFolderWindow = (FinderFinderWindow*) [theDocsFolder containerWindow];
NSLog(#"docsFolderWindow: %#",docsFolderWindow);
docsFolderWindow = [docsFolderWindow get];
NSLog(#"docsFolderWindow: %#",docsFolderWindow);
// change its bounds
docsFolderWindow.bounds = NSMakeRect(64., 64., 800, 600.);
// other fun stuff…
[docsFolderWindow setCurrentView:FinderEcvwListView];
[[docsFolderWindow iconViewOptions] setArrangement:FinderEarrArrangedByName];
[docsFolderWindow cleanUpBy:#selector(name)];
docsFolderWindow.toolbarVisible = NO;
docsFolderWindow.statusbarVisible = NO;
docsFolderWindow.sidebarWidth = 0;

Answer 2

There are a few different ways. The other answer works, or you could explicitly make a new Finder window and set its target property:
NSURL *u = [NSURL fileURLWithPath:#"/tmp"];
FinderFinderWindow *w = [[[theFinder classForScriptingClass:#"Finder window] alloc] init];
[[theFinder finderWindows] addObject:w];
[w setTarget:u];
You could also set it to an SBObject referring to a Finder item, such as theDocsFolder from the other answer.