@startuml test
class LineApi {
  - accessToken: string
  - getAccessToken(): string
}

class Blog {
  - imageUrl: string
  - getImageUrl(): string
}

class GoogleDrive {
  - folderId: string
  - saveFile(blob: Blob): File
}

class Script {
  - main(): void
  - getLineData(): LineData
  - getBlogImageData(): ImageData
  - saveImageDataToDrive(imageUrls: string[]): void
}

LineApi -> Script: getAccessToken
Blog -> Script: getImageUrl
Script -> GoogleDrive: saveFile
@enduml