code: public void init(Compiler compiler, int opPos, int stepType)
            throws javax.xml.transform.TransformerException
    {
  
      initPredicateInfo(compiler, opPos);
  
      // int testType = compiler.getOp(nodeTestOpPos);
    }
docs: Initialize an AxesWalker during the parse of the XPath expression.
  
  @param compiler The Compiler object that has information about this
  walker in the op map.
  @param opPos The op code position of this location step.
  @param stepType  The type of location step.
  
  @throws javax.xml.transform.TransformerException