question: Stylesheet popStylesheet ( ) { if ( ! m_stylesheetLocatorStack . isEmpty ( ) ) m_stylesheetLocatorStack . pop ( ) ; if ( ! m_stylesheets . isEmpty ( ) ) m_lastPoppedStylesheet = ( Stylesheet ) m_stylesheets . pop ( ) ; return m_lastPoppedStylesheet ; }
target:  Pop the last stylesheet pushed, and return the stylesheet that this handler is constructing, and set the last popped stylesheet member. Also pop the stylesheet locator stack.