https://feiyoung.r-universe.dev/MultiCOAPhttps://feiyoung.r-universe.dev/api/packages/MultiCOAPhttps://feiyoung.r-universe.dev/MultiCOAP/MultiCOAP.pdfhttps://feiyoung.r-universe.dev/MultiCOAP/doc/manual.htmlhttps://feiyoung.r-universe.dev/MultiCOAP/citationhttps://feiyoung.r-universe.dev/MultiCOAP/citation.txthttps://feiyoung.r-universe.dev/MultiCOAP/citation.cff