code: Observable<ComapiResult<UploadContentResponse>> doUploadContent(@NonNull final String token, @NonNull final String folder, @Nullable final String name, @NonNull final ContentData data) {
          return wrapObservable(service.uploadContent(AuthManager.addAuthPrefix(token), apiSpaceId, folder, name, data.getBody()).map(mapToComapiResult()), log, "Uploading content " + name);
      }
docs: Upload content data.
  
  @param token  Comapi access token.
  @param folder Folder name to put the file in.
  @param data   Content data.
  @return Observable emitting details of uploaded content.