code: @SuppressWarnings("unchecked")
      public Set<EnvironmentType> getAllEnvironmentTypes(String identifier) throws GreenPepperServerException
      {
          log.debug("Retreiving all Environment Types");
          Vector<Object> envTypesParams = (Vector<Object>)execute(XmlRpcMethodName.getAllEnvironmentTypes, new Vector(), identifier);
  
  		return XmlRpcDataMarshaller.toEnvironmentTypeList(envTypesParams);
      }
docs: {@inheritDoc}