interface RawFileRepresents a file to be added to the request
optionalexternalcontentType? : string 
Content-Type of the file
externaldata : Buffer | Uint8Array | boolean | number | string 
The actual data for the file
optionalexternalkey? : string 
An explicit key to use for key of the formdata field for this file. When not provided, the index of the file in the files array is used in the form files[${index}]. If you wish to alter the placeholder snowflake, you must provide this property in the same form (files[${placeholder}])
externalname : string 
The name of the file