question: protected void restoreBaseURI ( ) { fBaseURI . pop ( ) ; fLiteralSystemID . pop ( ) ; fExpandedSystemID . pop ( ) ; fBaseURIScope . pop ( ) ; fCurrentBaseURI . setBaseSystemId ( ( String ) fBaseURI . peek ( ) ) ; fCurrentBaseURI . setLiteralSystemId ( ( String ) fLiteralSystemID . peek ( ) ) ; fCurrentBaseURI . setExpandedSystemId ( ( String ) fExpandedSystemID . peek ( ) ) ; }
target:  Discards the URIs at the top of the stack, and restores the ones beneath it.