rem: var bp = this.addBreakpoint(BP_NORMAL, url, lineNo, null, null, props); 
add: var bp = this.addBreakpoint(BP_NORMAL, sourceFile, lineNo, props); 
context:     setBreakpoint: function(url, lineNo, props)    {        var bp = this.addBreakpoint(BP_NORMAL, url, lineNo, null, null, props);        if (bp)        {            dispatch(debuggers, "onToggleBreakpoint", [url, lineNo, true, getBreakpointProperties(bp)]);            return true;        }        return false;    },
meta: 7450	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7450/76449ef4d8385610e64112c53410246cfda12c62/firebug-service.js/clean/extension/components/firebug-service.js