Why does the getPaths method of Swagger Parser not return all paths?

I have a Swagger 1.2 doc.json and the following Java code which uses Swagger Parser to extract all the paths from this document. The problem is that the parser does not get all the paths (from 50 it shows me only 27).

public class Temps {

    public static void main (String[]args ) {
        int totale=0;
        Swagger swagger = new SwaggerParser().read("C:\\Users\\eya\\Desktop\\nodes.json");
         Map<String, Path> paths = swagger.getPaths(); 
         for (Map.Entry<String, Path> p : paths.entrySet()) {
                Path path = p.getValue();
                totale ++;
                Map<HttpMethod, Operation> operations = path.getOperationMap();
                for (java.util.Map.Entry<HttpMethod, Operation> o : operations.entrySet()) {
                    System.out.println("===");
                    System.out.println("PATH:" + p.getKey());
                    System.out.println("Http method:" + o.getKey());
                    System.out.println("Summary:" + o.getValue().getSummary());
                    System.out.println("Parameters number: " + o.getValue().getParameters().size());
                    for (Parameter parameter : o.getValue().getParameters()) {
                        System.out.println(" - " + parameter.getName());
                    }
                    System.out.println("Responses:");
                    for (Map.Entry<String, Response> r : o.getValue().getResponses().entrySet()) {
                        System.out.println(" - " + r.getKey() + ": " + r.getValue().getDescription());
                    }

                }
         }
         System.out.println(totale);
    }
}

Does anyone know what causes this problem?