src/vs/base/common/network.ts/FileAccessImpl/uriToFileUri
class FileAccessImpl:	uriToFileUri(uri: URI): URI {
		// Only convert the URI if it is `vscode-file:` scheme
		if (uri.scheme === Schemas.vscodeFileResource) {
			return uri.with({
				scheme: Schemas.file,
				// Only preserve the `authority` if it is different from
				// our fallback authority. This ensures we properly preserve
				// Windows UNC paths that come with their own authority.
				authority: uri.authority !== FileAccessImpl.FALLBACK_AUTHORITY ? uri.authority : null,
				query: null,
				fragment: null
			});
		}

		return uri;
	}