testSchema: Schema<
| "list"
| "item"
| "heading"
| "doc"
| "codeBlock"
| "iframe"
| "embeddedDoc"
| "paragraph"
| "text"
| "image"
| "table"
| "tableHeader"
| "tableRow"
| "tableCell"
| "blockquote"
| "cite",
| "hardBreak"
| "highlight"
| "underline"
| "strike"
| "subscript"
| "superscript"
| "code"
| "italic"
| "bold",
> & Schema<never, any> = ...