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// create a new SMXMLDocument with the contents of sample.xml
SMXMLDocument *document = [SMXMLDocument documentWithData:data error:&error];

// Pull out the <books> node
SMXMLElement *books = [document.root childNamed:@"books"];

// Look through <books> children of type <book>
for (SMXMLElement *book in [books childrenNamed:@"book"]) {
  
  // demonstrate common cases of extracting XML data
  NSString *isbn = [book attributeNamed:@"isbn"]; // XML attribute
  NSString *title = [book valueWithPath:@"title"]; // child node value
  
  // show off some KVC magic
  NSArray *authors = [[book childNamed:@"authors"].children valueForKey:@"value"];
  
  // do interesting things...
}