AEC Data Model技术问询：如何获取房间元素的Phase信息

使用AEC Data Model Explorer按Rooms类别检索元素时，能获取大部分属性参数，但Phase属性始终不在返回结果中。原查询代码如下：

query GetElementsFromCategory {
  elements(
    designId: "WORKING DESIGN ID"
    filter: {query: "property.name.category=='Rooms' and 'property.name.Element Context'==Instance"}
  ) {
    pagination {
      cursor
    }
    results {
      properties{
        results{
          name
        }
      }
    }
  }
}

返回结果示例（无Phase属性）：

{
  "data": {
    "elements": {
      "pagination": {
        "cursor": null
      },
      "results": [
        {
          "properties": {
            "results": [
              {
                "name": "Comments"
              },
              {
                "name": "Edited by"
              },
              {
                "name": "Workset"
              },
              {
                "name": "External ID"
              },
              {
                "name": "Export to IFC"
              },
              {
                "name": "Export to IFC As"
              },
              {
                "name": "IFC Predefined Type"
              },
              {
                "name": "IfcGUID"
              },
              {
                "name": "Family Name"
              },
              {
                "name": "Element Name"
              },
              {
                "name": "Element Context"
              },
              {
                "name": "Revit Element ID"
              },
              {
                "name": "Area"
              },
              {
                "name": "Computation Height"
              },
              {
                "name": "Department"
              },
              {
                "name": "Base Finish"
              },
              {
                "name": "Ceiling Finish"
              },
              {
                "name": "Floor Finish"
              },
              {
                "name": "Wall Finish"
              },
              {
                "name": "Unbounded Height"
              },
              {
                "name": "Base Offset"
              },
              {
                "name": "Name"
              },
              {
                "name": "Number"
              },
              {
                "name": "Occupancy"
              },
              {
                "name": "Perimeter"
              },
              {
                "name": "Limit Offset"
              },
              {
                "name": "Volume"
              }
            ]
          }
        }
      ]
    }
  }
}

Phase属于引用型属性，关联到项目中的Phase对象，这类属性不会出现在properties字段下，需要在查询中显式请求references字段来获取。修改后的查询代码如下：

query GetElementsFromCategory {
  elements(
    designId: "WORKING DESIGN ID"
    filter: {query: "property.name.category=='Rooms' and 'property.name.Element Context'==Instance"}
  ) {
    pagination {
      cursor
    }
    results {
      properties{
        results{
          name
        }
      }
      # 添加references字段获取关联属性
      references {
        results {
          name
          displayValue
          value {
            id
          }
        }
      }
    }
  }
}

修改后即可获取到Phase属性，返回结果中的references部分如下：

"references": {
            "results": [
              {
                "name": "Upper Limit",
                "displayValue": "LEVEL 1",
                "value": {
                  "id": "this item id"
                }
              },
              {
                "name": "Level",
                "displayValue": "LEVEL 1",
                "value": {
                  "id": "this item id"
                }
              },
              {
                "name": "Phase",
                "displayValue": "New Construction",
                "value": {
                  "id": "this item id"
                }
              }
            ]
          }

内容的提问来源于stack exchange，提问作者Sean_Page