dubbo-admin-server/src/main/java/org/apache/dubbo/admin/common/util/ServiceTestUtil.java [126:196]:
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        switch (type) {
            case "byte":
            case "java.lang.Byte":
            case "short":
            case "java.lang.Short":
            case "int":
            case "java.lang.Integer":
            case "long":
            case "java.lang.Long":
                return 0;
            case "float":
            case "java.lang.Float":
            case "double":
            case "java.lang.Double":
                return 0.0;
            case "boolean":
            case "java.lang.Boolean":
                return true;
            case "void":
            case "java.lang.Void":
                return null;
            case "java.lang.String":
                return "";
            case "java.lang.Object":
                return Collections.emptyMap();
            case "java.util.Date":
                return System.currentTimeMillis();
            default:
                return Collections.emptyMap();
        }
    }

    private static Object generateType(ServiceDefinition sd, String type) {
        TypeDefinition td = findTypeDefinition(sd, type);
        return generateType(sd, td);
    }

    private static Object generateType(ServiceDefinition sd, TypeDefinition td) {
        if (isPrimitiveType(td)) {
            return generatePrimitiveType(td);
        } else if (isMap(td)) {
            return generateMapType(sd, td);
        } else if (isArray(td)) {
            return generateArrayType(sd, td);
        } else if (isCollection(td)) {
            return generateCollectionType(sd, td);
        } else {
            return generateComplexType(sd, td);
        }
    }

    private static Object generateMapType(ServiceDefinition sd, TypeDefinition td) {
        String keyType = StringUtils.substringAfter(td.getType(), "<");
        keyType = StringUtils.substringBefore(keyType, ",");
        keyType = StringUtils.strip(keyType);

        Map<Object, Object> map = new HashMap<>();
        Object key = generateType(sd, keyType);
        String valueType = StringUtils.substringAfter(td.getType(), ",");
        valueType = StringUtils.substringBefore(valueType, ">");
        valueType = StringUtils.strip(valueType);
        valueType = StringUtils.isNotEmpty(valueType) ? valueType : "java.lang.Object";
        Object value = generateType(sd, valueType);
        map.put(key, value);
        return map;
    }

    private static Object generateCollectionType(ServiceDefinition sd, TypeDefinition td) {
        String type = StringUtils.substringAfter(td.getType(), "<");
        type = StringUtils.substringBefore(type, ">");
        if (StringUtils.isEmpty(type)) {
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dubbo-admin-server/src/main/java/org/apache/dubbo/admin/common/util/ServiceTestV3Util.java [135:205]:
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        switch (type) {
            case "byte":
            case "java.lang.Byte":
            case "short":
            case "java.lang.Short":
            case "int":
            case "java.lang.Integer":
            case "long":
            case "java.lang.Long":
                return 0;
            case "float":
            case "java.lang.Float":
            case "double":
            case "java.lang.Double":
                return 0.0;
            case "boolean":
            case "java.lang.Boolean":
                return true;
            case "void":
            case "java.lang.Void":
                return null;
            case "java.lang.String":
                return "";
            case "java.lang.Object":
                return Collections.emptyMap();
            case "java.util.Date":
                return System.currentTimeMillis();
            default:
                return Collections.emptyMap();
        }
    }

    private static Object generateType(ServiceDefinition sd, String type) {
        TypeDefinition td = findTypeDefinition(sd, type);
        return generateType(sd, td);
    }

    private static Object generateType(ServiceDefinition sd, TypeDefinition td) {
        if (isPrimitiveType(td)) {
            return generatePrimitiveType(td);
        } else if (isMap(td)) {
            return generateMapType(sd, td);
        } else if (isArray(td)) {
            return generateArrayType(sd, td);
        } else if (isCollection(td)) {
            return generateCollectionType(sd, td);
        } else {
            return generateComplexType(sd, td);
        }
    }

    private static Object generateMapType(ServiceDefinition sd, TypeDefinition td) {
        String keyType = StringUtils.substringAfter(td.getType(), "<");
        keyType = StringUtils.substringBefore(keyType, ",");
        keyType = StringUtils.strip(keyType);

        Map<Object, Object> map = new HashMap<>();
        Object key = generateType(sd, keyType);
        String valueType = StringUtils.substringAfter(td.getType(), ",");
        valueType = StringUtils.substringBefore(valueType, ">");
        valueType = StringUtils.strip(valueType);
        valueType = StringUtils.isNotEmpty(valueType) ? valueType : "java.lang.Object";
        Object value = generateType(sd, valueType);
        map.put(key, value);
        return map;
    }

    private static Object generateCollectionType(ServiceDefinition sd, TypeDefinition td) {
        String type = StringUtils.substringAfter(td.getType(), "<");
        type = StringUtils.substringBefore(type, ">");
        if (StringUtils.isEmpty(type)) {
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