Issue with the REST API and ExcelWorkbooks

[BenMackin]

I am trying to use the REST API to access an Excel Workbook I have uploaded to the server.

When I just query the item using:

https://MYSERVER.INT.COM/reports/api/v2.0/ExcelWorkbooks(path='/BusinessReporting/Test/TestFile.xlsx')

I get back the following JSON:

 {
  "@odata.context":"https://MYSERVER.INT.COM/reports/api/v2.0/$metadata#ExcelWorkbooks/$entity","Id":"ecda6463-3fc4-4329-a56e-b5befcb0dce1","Name":"TestFile.xlsx","Description":null,"Path":"/BusinessReporting/Test/TestFile.xlsx","Type":"ExcelWorkbook","Hidden":false,"Size":9913,"ModifiedBy":"XXXXXX\\MackinBW","ModifiedDate":"2018-10-19T14:11:42.333-07:00","CreatedBy":"XXXXXX\\MackinBW","CreatedDate":"2018-10-19T14:11:06.3-07:00","ParentFolderId":"66dd88d9-5c1c-4203-9492-4de8b6934920","IsFavorite":false,"Roles":[
   
  ],"ContentType":null,"Content":""
}

As you can see, it says the ContentType is null, and the Content is also null. If I try and access the content with:

https://MYSERVER.INT.COM/reports/api/v2.0/ExcelWorkbooks(path='/BusinessReporting/Test/TestFile.xlsx')/Content/$value

I get a 404 error.

My understanding of the APIs is that I should get back the contents of the Excel workbook. Is that not correct?