How to properly handle save errors with withLock

[kalupas226]

I think I can handle save errors using saveError.

@Shared(.xxx) var someSharedState

// ...

$someSharedState.withLock {
  // ...
}

if let error = $someSharedState.saveError {
  // Handle the error.
}

However I would like to handle errors more effectively when I use withLock.
For example:

try $someSharedState.withLockThrowing {
  // ...
}

I achived that by extending Shared implementation:

  public func withLockThrowing<R>(
    _ operation: (inout Value) throws -> R,
    fileID: StaticString = #fileID,
    filePath: StaticString = #filePath,
    line: UInt = #line,
    column: UInt = #column
  ) throws -> R {
    let result = try self.withLock(
      operation,
      fileID: fileID,
      filePath: filePath,
      line: line,
      column: column
    )

    if let saveError {
      throw saveError
    }

    return result
  }
}

How to properly handle save errors with withLock?