contextualize_item : SYSTEM VAR CONFIGURE VAR
                              | SYSTEM VAR CONFIGURE VAR STEP NUMBER
                              | SYSTEM VAR CONFIGURE VAR WITH VAR

def p_contextualize_item(self, t):
        """contextualize_item : SYSTEM VAR CONFIGURE VAR
                              | SYSTEM VAR CONFIGURE VAR STEP NUMBER
                              | SYSTEM VAR CONFIGURE VAR WITH VAR"""

        if len(t) == 5:
            t[0] = contextualize_item(t[2], t[4], line=t.lineno(1))
        elif t[5] == "with":
            t[0] = contextualize_item(t[2], t[4], ctxt_tool=t[6], line=t.lineno(1))
        else:
            t[0] = contextualize_item(t[2], t[4], num=t[6], line=t.lineno(1))