ZeonXr opened a new issue, #7822:
URL: https://github.com/apache/opendal/issues/7822
### Describe the bug
The WebDAV service fails to parse a valid `207 Multi-Status` PROPFIND
response when a single `<response>` contains multiple `<propstat>` entries.
The current WebDAV response model treats `propstat` as a single field, so
XML deserialization can fail with:
```text
deserialize xml, source: duplicate field `propstat`
```
However, WebDAV servers can group properties by status. For example,
available properties can be returned in a `200 OK` propstat, while unavailable
properties can be returned in a `404 Not Found` propstat under the same
response.
Example response shape:
```xml
<D:response>
<D:href>/webdav/example/</D:href>
<D:propstat>
<D:prop>
<D:resourcetype><D:collection/></D:resourcetype>
<D:displayname>example-folder</D:displayname>
<D:getlastmodified>Thu, 25 Jun 2026 06:23:30 GMT</D:getlastmodified>
<D:getetag>"example-etag"</D:getetag>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
<D:propstat>
<D:prop>
<D:creationdate/>
<D:getcontentlength/>
<D:getcontenttype/>
<D:getcontentlanguage/>
<D:source/>
</D:prop>
<D:status>HTTP/1.1 404 Not Found</D:status>
</D:propstat>
</D:response>
```
### Steps to Reproduce
1. Configure the WebDAV service against a server that returns multiple
`<propstat>` entries under one PROPFIND `<response>`.
2. Call an operation that relies on PROPFIND metadata parsing, such as
`stat`, `list`, or `create_dir` parent directory checks.
3. Observe that XML deserialization can fail with duplicate `propstat`.
### Expected Behavior
OpenDAL should parse WebDAV PROPFIND responses with multiple `propstat`
entries.
For metadata parsing, OpenDAL should use a successful `2xx` propstat entry
and ignore failed property groups such as `404 Not Found`.
### Additional Context
This behavior is allowed by WebDAV `207 Multi-Status` semantics: properties
can be grouped by status using multiple `propstat` entries under the same
response.
### Are you willing to submit a PR to fix this bug?
- [x] Yes, I would like to submit a PR.
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