[Feature Request] Provide access to the "Alias" and "Tag" properties of StructuredDocumentTag objects.

[glorious-beard]

Description

Currently, while structured document tags are available for a document, programmatic access to the title and tag properties for each structured document tag is not. The API only provides access to the paragraphs.

Expected Behavior

Each StructuredDocumentTag object provides Alias() and Tag() functions.

for _, sdt := range doc.StructuredDocumentTags() {
    fmt.Printf("Alias: '%v'\n", sdt.Alias()) // returns an alias or empty string for the SDT
    fmt.Printf("Tag: '%v'\n", sdt.Tag()) // returns a tag or empty string for the SDT
}

Actual Behavior

No access to alias or tag for a structured document tag.

Please include a reproducible code snippet or document attachment that
demonstrates the issue.

[gunnsth]

@glorious-beard What is the use case for getting the alias and tag? Some examples would be great to understand.