public static Map<String, ShenyuClientRegisterRepository> getRepositoryMap() {
        return REPOSITORY_MAP;
    }
Retrieves the repository map containing mappings of register types to corresponding ShenyuClientRegisterRepository instances.

@return A {@link Map} where keys are register types and values are associated {@link ShenyuClientRegisterRepository} instances.
shenyu-client/shenyu-client-core/src/main/java/org/apache/shenyu/client/core/register/ShenyuClientRegisterRepositoryFactory.java