dubbo-common/src/main/java/org/apache/dubbo/rpc/model/ReflectionServiceDescriptor.java [95:153]:
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    public String getInterfaceName() {
        return interfaceName;
    }

    public Class<?> getServiceInterfaceClass() {
        return serviceInterfaceClass;
    }

    public Set<MethodDescriptor> getAllMethods() {
        Set<MethodDescriptor> methodModels = new HashSet<>();
        methods.forEach((k, v) -> methodModels.addAll(v));
        return methodModels;
    }

    /**
     * Does not use Optional as return type to avoid potential performance decrease.
     *
     * @param methodName
     * @param params
     * @return
     */
    public MethodDescriptor getMethod(String methodName, String params) {
        Map<String, MethodDescriptor> methods = descToMethods.get(methodName);
        if (CollectionUtils.isNotEmptyMap(methods)) {
            return methods.get(params);
        }
        return null;
    }

    /**
     * Does not use Optional as return type to avoid potential performance decrease.
     *
     * @param methodName
     * @param paramTypes
     * @return
     */
    public MethodDescriptor getMethod(String methodName, Class<?>[] paramTypes) {
        List<MethodDescriptor> methodModels = methods.get(methodName);
        if (CollectionUtils.isNotEmpty(methodModels)) {
            for (MethodDescriptor descriptor : methodModels) {
                if (Arrays.equals(paramTypes, descriptor.getParameterClasses())) {
                    return descriptor;
                }
            }
        }
        return null;
    }

    public List<MethodDescriptor> getMethods(String methodName) {
        return methods.get(methodName);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
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dubbo-common/src/main/java/org/apache/dubbo/rpc/model/StubServiceDescriptor.java [61:119]:
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    public String getInterfaceName() {
        return interfaceName;
    }

    public Class<?> getServiceInterfaceClass() {
        return serviceInterfaceClass;
    }

    public Set<MethodDescriptor> getAllMethods() {
        Set<MethodDescriptor> methodModels = new HashSet<>();
        methods.forEach((k, v) -> methodModels.addAll(v));
        return methodModels;
    }

    /**
     * Does not use Optional as return type to avoid potential performance decrease.
     *
     * @param methodName
     * @param params
     * @return
     */
    public MethodDescriptor getMethod(String methodName, String params) {
        Map<String, MethodDescriptor> methods = descToMethods.get(methodName);
        if (CollectionUtils.isNotEmptyMap(methods)) {
            return methods.get(params);
        }
        return null;
    }

    /**
     * Does not use Optional as return type to avoid potential performance decrease.
     *
     * @param methodName
     * @param paramTypes
     * @return
     */
    public MethodDescriptor getMethod(String methodName, Class<?>[] paramTypes) {
        List<MethodDescriptor> methodModels = methods.get(methodName);
        if (CollectionUtils.isNotEmpty(methodModels)) {
            for (MethodDescriptor descriptor : methodModels) {
                if (Arrays.equals(paramTypes, descriptor.getParameterClasses())) {
                    return descriptor;
                }
            }
        }
        return null;
    }

    public List<MethodDescriptor> getMethods(String methodName) {
        return methods.get(methodName);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
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