Program: 51246
Project: 51246
Buggy source:
private static void setProperty(final Object generator,final String propertyName,final Object propertyValue) throws IllegalAccessException, InvocationTargetException, NoSuchMethodException, InstantiationException, URISyntaxException {
  final String methodName="String_Node_Str" + propertyName.substring(0,1).toUpperCase() + propertyName.substring(1);
  final Method method=getMethodByName(methodName,generator.getClass());
  if (method.getParameterTypes().length != 1) {
    throw new RuntimeException("String_Node_Str" + methodName + "String_Node_Str"+ method.getParameterTypes().length);
  }
  final Class<?> paramClazz=method.getParameterTypes()[0];
  if (paramClazz == propertyValue.getClass()) {
    method.invoke(generator,propertyValue);
  }
 else   if (File.class.equals(paramClazz) && propertyValue instanceof String) {
    final String filename=propertyValue.toString();
    if (filename.startsWith("String_Node_Str")) {
      final String strippedFilename=filename.substring("String_Node_Str".length());
      final URL resource=generator.getClass().getResource(strippedFilename);
      if (resource == null) {
        throw new RuntimeException("String_Node_Str" + strippedFilename + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str");
      }
      final File file=new File(resource.toURI());
      method.invoke(generator,file);
    }
 else {
      method.invoke(generator,new File(filename));
    }
  }
 else {
    final Constructor<?> paramTypeConstructor=paramClazz.getConstructor(propertyValue.getClass());
    if (paramTypeConstructor != null) {
      final Object typedPropertyValue=paramTypeConstructor.newInstance(propertyValue);
      method.invoke(generator,typedPropertyValue);
    }
 else {
      throw new RuntimeException("String_Node_Str" + propertyName + "String_Node_Str"+ "String_Node_Str"+ propertyValue.getClass()+ "String_Node_Str"+ propertyValue.getClass()+ "String_Node_Str"+ "String_Node_Str"+ paramClazz.getName());
    }
  }
}

Fixed version (ground truth):
/** 
 * Set the object (generator) property with the given name to the specified value.
 * @param generator the object, on which the property shall be set
 * @param propertyName the name of the property, that shall be set
 * @param propertyValue the value to populate the property with
 * @return a {@link Callback} object that must be called later, or null if no callback is required.
 * @throws Exception if s.th. goes wrong
 */
private static Callback setProperty(final Object generator,final String propertyName,final Object propertyValue) throws Exception {
  Callback result=null;
  final String methodName="String_Node_Str" + propertyName.substring(0,1).toUpperCase() + propertyName.substring(1);
  final Method method=getMethodByName(methodName,generator.getClass());
  if (method.getParameterTypes().length != 1) {
    throw new RuntimeException("String_Node_Str" + methodName + "String_Node_Str"+ method.getParameterTypes().length);
  }
  final Class<?> paramClazz=method.getParameterTypes()[0];
  if (paramClazz == propertyValue.getClass()) {
    method.invoke(generator,propertyValue);
  }
 else   if (File.class.equals(paramClazz) && propertyValue instanceof String) {
    final String filename=propertyValue.toString();
    if (filename.startsWith("String_Node_Str")) {
      final String strippedFilename=filename.substring("String_Node_Str".length());
      final URL resource=generator.getClass().getResource(strippedFilename);
      if (resource == null) {
        throw new RuntimeException("String_Node_Str" + strippedFilename + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str");
      }
      final File file=new File(resource.toURI());
      method.invoke(generator,file);
    }
 else {
      method.invoke(generator,new File(filename));
    }
  }
 else   if (InputStream.class.equals(paramClazz) && propertyValue instanceof String) {
    final String resource=propertyValue.toString();
    ClassLoader loader=Thread.currentThread().getContextClassLoader();
    if (loader == null) {
      loader=WadlGeneratorLoader.class.getClassLoader();
    }
    final InputStream is=loader.getResourceAsStream(resource);
    if (is == null) {
      String message="String_Node_Str" + resource + "String_Node_Str";
      throw new RuntimeException(message);
    }
    result=new Callback(){
      public void callback(){
        try {
          is.close();
        }
 catch (        IOException e) {
          LOGGER.log(Level.WARNING,"String_Node_Str" + resource,e);
        }
      }
    }
;
    try {
      method.invoke(generator,is);
    }
 catch (    Exception e) {
      is.close();
      throw e;
    }
  }
 else {
    final Constructor<?> paramTypeConstructor=paramClazz.getConstructor(propertyValue.getClass());
    if (paramTypeConstructor != null) {
      final Object typedPropertyValue=paramTypeConstructor.newInstance(propertyValue);
      method.invoke(generator,typedPropertyValue);
    }
 else {
      throw new RuntimeException("String_Node_Str" + propertyName + "String_Node_Str"+ "String_Node_Str"+ propertyValue.getClass()+ "String_Node_Str"+ propertyValue.getClass()+ "String_Node_Str"+ "String_Node_Str"+ paramClazz.getName());
    }
  }
  return result;
}