title: How do I find all the property keys of a KVC compliant Objective-C object?
body: <p>Is there a method that returns all the keys for an object conforming to the NSKeyValueCoding protocol?</p>
  
  <p>Something along the lines of <code>[object getPropertyKeys]</code> that would return an NSArray of NSString objects. It would work for any KVC-compliant object. Does such a method exist? I haven't found anything in searching the Apple docs so far.</p>
  
  <p>Thanks,
  G.</p>