code: private static Method getInitializeMethod(Class< ? > cl) {
          Method method = null;
          
          try {
              method = cl.getDeclaredMethod(IS_INITIALIZED, new Class[]{Object.class});
          } catch (NoSuchMethodException e) {
  			//in this case 'isInitialized' method can't be null
          } 
          return method;		
      }
docs: Return "isInitialized" Hibernate static method
  @param cl - "Hibernate" class instance
  @return "isInitialized" Hibernate static method