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https://liferay.dev/develop/tutorials/-/knowledge_base/7-0/making-liferay-and-custom-portlet-services-available-in-your-android-app?p_p_lifecycle=2&p_p_resource_id=kbArticleRSS&p_p_cacheability=cacheLevelFull&_2_WAR_knowledgebaseportlet_resourcePrimKey=1437668&_2_WAR_knowledgebaseportlet_resourceClassNameId=10441