InputMessageDocument.fromJson constructor
Parse from a json
Implementation
factory InputMessageDocument.fromJson(Map<String, dynamic> json) =>
    InputMessageDocument(
      document: InputFile.fromJson(json['document']),
      thumbnail: json['thumbnail'] == null
          ? null
          : InputThumbnail.fromJson(json['thumbnail']),
      disableContentTypeDetection: json['disable_content_type_detection'],
      caption: json['caption'] == null
          ? null
          : FormattedText.fromJson(json['caption']),
    );