如何通过Autodesk Construction Cloud API获取图纸关联的问题？

我需要在ACC中获取与问题关联的图纸。按我的理解，这类关联信息应该通过Relationships API获取（比如获取问题关联的照片就是用这个API）。

我调用了Relationships API的搜索接口，但响应仅包含markup和markupsheethistory类型的实体，完全没有出现和图纸相关的内容（注：ID为ed459d9e-1a1d-4296-809a-35ad0977be7d的问题确实关联了某张图纸）。另外，调用GET Sheets API也未返回任何关联相关的信息。

以下是API返回的响应内容：

{
    "relationships": [
        {
            "permission": null,
            "id": "f888c048-a155-5e56-abd0-cee4bc01f4a4",
            "createdOn": "2023-03-13T03:45:23.259626+00:00",
            "isReadOnly": false,
            "isService": true,
            "isDeleted": false,
            "entities": [
                {
                    "createdOn": "2023-03-13T03:45:23.253702+00:00",
                    "domain": "autodesk-construction-markup",
                    "type": "markupsheethistory",
                    "id": "dcdc79df-e6c1-4f33-8e20-1a397a5732ca"
                },
                {
                    "createdOn": "2023-03-13T03:45:23.253702+00:00",
                    "domain": "autodesk-bim360-issue",
                    "type": "issue",
                    "id": "ed459d9e-1a1d-4296-809a-35ad0977be7d"
                }
            ]
        },
        {
            "permission": null,
            "id": "a58b0b20-71f0-46f4-ba4c-136f931e53ea",
            "createdOn": "2023-03-13T03:45:23.428655+00:00",
            "isReadOnly": false,
            "isService": true,
            "isDeleted": false,
            "entities": [
                {
                    "createdOn": "2023-03-13T03:45:23.253702+00:00",
                    "domain": "autodesk-bim360-issue",
                    "type": "issue",
                    "id": "ed459d9e-1a1d-4296-809a-35ad0977be7d"
                },
                {
                    "createdOn": "2023-03-13T03:45:23.423232+00:00",
                    "domain": "autodesk-construction-markup",
                    "type": "markup",
                    "id": "98c2c899-c7f8-4315-910a-175e3d4fec26"
                }
            ]
        }
    ]
}

请问我是不是用错了API？或者应该如何通过返回的markup和markupsheethistory实体找到关联的图纸？

内容的提问来源于stack exchange，提问作者Juiin Hao