question: private void restoreNestedVariables ( ) { if ( nestedVars != null ) { Iterator < String > iter = nestedVars . iterator ( ) ; while ( iter . hasNext ( ) ) { String varName = iter . next ( ) ; varName = findAlias ( varName ) ; Object obj = originalNestedVars . get ( varName ) ; if ( obj != null ) { invokingJspCtxt . setAttribute ( varName , obj ) ; } else { invokingJspCtxt . removeAttribute ( varName , PAGE_SCOPE ) ; } } } }
target:  Restores the values of any NESTED variables in the invoking JSP context.