question: protected LocPathIterator changePartToRef ( final QName uniquePseudoVarName , WalkingIterator wi , final int numSteps , final boolean isGlobal ) { Variable var = new Variable ( ) ; var . setQName ( uniquePseudoVarName ) ; var . setIsGlobal ( isGlobal ) ; if ( isGlobal ) { ElemTemplateElement elem = getElemFromExpression ( wi ) ; StylesheetRoot root = elem . getStylesheetRoot ( ) ; Vector vars = root . getVariablesAndParamsComposed ( ) ; var . setIndex ( vars . size ( ) - 1 ) ; } AxesWalker walker = wi . getFirstWalker ( ) ; for ( int i = 0 ; i < numSteps ; i ++ ) { assertion ( null != walker , "Walker should not be null!" ) ; walker = walker . getNextWalker ( ) ; } if ( null != walker ) { FilterExprWalker few = new FilterExprWalker ( wi ) ; few . setInnerExpression ( var ) ; few . exprSetParent ( wi ) ; few . setNextWalker ( walker ) ; walker . setPrevWalker ( few ) ; wi . setFirstWalker ( few ) ; return wi ; } else { FilterExprIteratorSimple feis = new FilterExprIteratorSimple ( var ) ; feis . exprSetParent ( wi . exprGetParent ( ) ) ; return feis ; } }
target:  Change a given number of steps to a single variable reference.