API 2.0 - Support for Multipart Uploads

	Related Object	Operation	HTTP Method	API 2.0 endpoint
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1	Attachments	Attach File to Comment	POST	/sheets/{sheetId}/comments/{commentId}/attachments
2	Attachments	Attach File to Row	POST	/sheets/{sheetId}/rows/{rowId}/attachments
3	Attachments	Attach File to Sheet	POST	/sheets/{sheetId}/attachments
4	Attachments	Attach New Version	POST	/sheets/{sheetId}/attachments/{attachmentId}/versions
5	Comments	Add Comment	POST	/sheets/{sheetId}/discussions/{discussionId}/comments
6	Discussions	Create Discussion on Sheet	POST	/sheets/{sheetId}/discussions