ConstReadonlyb2_list_file_names: 10000b2_list_file_names.maxFileCount cap.
Readonlyb2_list_file_versions: 10000b2_list_file_versions.maxFileCount cap.
Readonlyb2_list_keys: 10000b2_list_keys.maxKeyCount cap.
Readonlyb2_list_parts: 10000b2_list_parts.maxPartCount cap.
Readonlyb2_list_unfinished_large_files: 100b2_list_unfinished_large_files.maxFileCount cap.
Per-endpoint upper bound on the
maxFileCount(ormaxKeyCount/maxPartCount) request field. Sourced from the B2 endpoint docs.