code: private static Object _runMethod(Object obj, String methodName)
      {
          try
          {
              Method sessionIdMethod = obj.getClass().getMethod(methodName);
              return sessionIdMethod.invoke(obj);
          }
          catch (Exception e)
          {
              return null;
          }
  
      }
docs: Runs a method on an object and returns the result
  
  @param obj the object to run the method on
  @param methodName the name of the method
  @return the results of the method run