The only parameter that we actually need here is the `PDFDataRangeTransport`-instance, since the others are not necessary. - The `url` parameter, as passed to the `getDocument` function in the API, is simply being ignored; see2d87a2eb1c/src/display/api.js (L447-L458)- The `length` parameter, as passed to the `getDocument` function in the API, is always being overwritten; see2d87a2eb1c/src/display/api.js (L519-L525)