message: change: use isContainerIdentifier in FixedContentTypeMapper
diff: @@ -4,7 +4,7 @@ import { getLoggerFor } from '../../logging/LogUtil';
  import { UnsupportedHttpError } from '../../util/errors/UnsupportedHttpError';
  import {
  encodeUriPathComponents,
  - ensureTrailingSlash,
  + ensureTrailingSlash, isContainerIdentifier,
  trimTrailingSlashes,
  } from '../../util/PathUtil';
  import type { FileIdentifierMapper, ResourceLink } from '../FileIdentifierMapper';
  @@ -35,7 +35,7 @@ export class FixedContentTypeMapper implements FileIdentifierMapper {
  const filePath = getAbsolutePath(this.rootFilepath, path);
  // Container
  - if (identifier.path.endsWith('/')) {
  + if (isContainerIdentifier(identifier)) {
  this.logger.debug(`URL ${identifier.path} points to the container ${filePath}`);
  return {
  identifier,
  