“…It features a vast repository of programming knowledge including approximately 21 million questions, 32 million anwers, 15 million users and 11 million visitors per day, as of April 2021. 8 Study [39] has shown that API-related posts in SO can be categorized into topic issues such as API security, API usage, API Debugging, among other topics issues. In this section, we present our data model to represent, enrich and index API-related posts in SO based on such topic issues, in order to support discovery and understanding of API-related knowledge.…”