code: public PageImages listWorkspaceFilePages(String accountId, String workspaceId, String folderId, String fileId) throws ApiException {
      return listWorkspaceFilePages(accountId, workspaceId, folderId, fileId, null);
    }
docs: List File Pages
  Retrieves a workspace file as rasterized pages.
  @param accountId The external account number (int) or account ID Guid. (required)
  @param workspaceId Specifies the workspace ID GUID. (required)
  @param folderId The ID of the folder being accessed. (required)
  @param fileId Specifies the room file ID GUID. (required)
  @return PageImages