PortletContainerResponse encapsulates the response from the
PAE back to the portlet container. PAE is responsible to use the set
methods to set the results that it wants to return back to the portlet
container. Portlet container can then use the get methods to get the
response back.
Returns the code of the error that occured during the current operation.
PortletContainerErrorCode.NO_ERROR if there is noerror, otherwise code defined in PortletContainerErrorCode.
Sets the code of the error that occured during the current operation.
Parameters: errorCode - PortletContainerErrorCode.NO_ERROR ifthere is no error, otherwise code defined in PortletContainerErrorCode.