apm-sniffer/apm-sdk-plugin/dubbo-2.7.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/asf/dubbo/DubboInterceptor.java [144:162]:
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    private String generateOperationName(URL requestURL, Invocation invocation) {
        StringBuilder operationName = new StringBuilder();
        String groupStr = requestURL.getParameter(Constants.GROUP_KEY);
        groupStr = StringUtil.isEmpty(groupStr) ? "" : groupStr + "/";
        operationName.append(groupStr);
        operationName.append(requestURL.getPath());
        operationName.append("." + invocation.getMethodName() + "(");
        for (Class<?> classes : invocation.getParameterTypes()) {
            operationName.append(classes.getSimpleName() + ",");
        }

        if (invocation.getParameterTypes().length > 0) {
            operationName.delete(operationName.length() - 1, operationName.length());
        }

        operationName.append(")");

        return operationName.toString();
    }
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apm-sniffer/apm-sdk-plugin/dubbo-plugin/src/main/java/org/apache/skywalking/apm/plugin/dubbo/DubboInterceptor.java [126:144]:
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    private String generateOperationName(URL requestURL, Invocation invocation) {
        StringBuilder operationName = new StringBuilder();
        String groupStr = requestURL.getParameter(Constants.GROUP_KEY);
        groupStr = StringUtil.isEmpty(groupStr) ? "" : groupStr + "/";
        operationName.append(groupStr);
        operationName.append(requestURL.getPath());
        operationName.append("." + invocation.getMethodName() + "(");
        for (Class<?> classes : invocation.getParameterTypes()) {
            operationName.append(classes.getSimpleName() + ",");
        }

        if (invocation.getParameterTypes().length > 0) {
            operationName.delete(operationName.length() - 1, operationName.length());
        }

        operationName.append(")");

        return operationName.toString();
    }
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