diff --git a/src/storage/ExtensionBasedMapper.ts b/src/storage/ExtensionBasedMapper.ts
index 8fb6a7527..f257107e5 100644
--- a/src/storage/ExtensionBasedMapper.ts
+++ b/src/storage/ExtensionBasedMapper.ts
@@ -3,7 +3,6 @@ import { posix } from 'path';
 import * as mime from 'mime-types';
 import type { ResourceIdentifier } from '../ldp/representation/ResourceIdentifier';
 import { APPLICATION_OCTET_STREAM, TEXT_TURTLE } from '../util/ContentTypes';
-import { ConflictHttpError } from '../util/errors/ConflictHttpError';
 import { NotFoundHttpError } from '../util/errors/NotFoundHttpError';
 import { UnsupportedHttpError } from '../util/errors/UnsupportedHttpError';
 import {
@@ -202,34 +201,10 @@ export class ExtensionBasedMapper implements FileIdentifierMapper {
    *
    * @returns A string representing the relative path.
    */
-  public getRelativePath(identifier: ResourceIdentifier): string {
+  private getRelativePath(identifier: ResourceIdentifier): string {
     if (!identifier.path.startsWith(this.baseRequestURI)) {
       throw new NotFoundHttpError();
     }
     return decodeUriPathComponents(identifier.path.slice(this.baseRequestURI.length));
   }
-
-  /**
-   * Splits the identifier into the parent directory and slug.
-   * If the identifier specifies a directory, slug will be undefined.
-   * @param identifier - Incoming identifier.
-   *
-   * @throws {@link ConflictHttpError}
-   * If the root identifier is passed.
-   *
-   * @returns A ResourcePath object containing (absolute) path and (optional) slug fields.
-   */
-  public extractDocumentName(identifier: ResourceIdentifier): ResourcePath {
-    const [ , containerPath, documentName ] = /^(.*\/)([^/]+\/?)?$/u.exec(this.getRelativePath(identifier)) ?? [];
-    if (
-      (typeof containerPath !== 'string' || normalizePath(containerPath) === '/') && typeof documentName !== 'string') {
-      throw new ConflictHttpError('Container with that identifier already exists (root).');
-    }
-    return {
-      containerPath: this.getAbsolutePath(normalizePath(containerPath)),
-
-      // If documentName is defined, return normalized documentName
-      documentName: typeof documentName === 'string' ? normalizePath(documentName) : undefined,
-    };
-  }
 }
diff --git a/src/storage/accessors/FileDataAccessor.ts b/src/storage/accessors/FileDataAccessor.ts
index e0f20f2fc..5d7720332 100644
--- a/src/storage/accessors/FileDataAccessor.ts
+++ b/src/storage/accessors/FileDataAccessor.ts
@@ -16,8 +16,7 @@ import type { MetadataController } from '../../util/MetadataController';
 import { CONTENT_TYPE, DCTERMS, POSIX, RDF, XSD } from '../../util/UriConstants';
 import { toNamedNode, toTypedLiteral } from '../../util/UriUtil';
 import { pushQuad } from '../../util/Util';
-import type { ExtensionBasedMapper } from '../ExtensionBasedMapper';
-import type { ResourceLink } from '../FileIdentifierMapper';
+import type { FileIdentifierMapper, ResourceLink } from '../FileIdentifierMapper';
 import type { DataAccessor } from './DataAccessor';
 
 const { join: joinPath } = posix;
@@ -26,10 +25,10 @@ const { join: joinPath } = posix;
  * DataAccessor that uses the file system to store documents as files and containers as folders.
  */
 export class FileDataAccessor implements DataAccessor {
-  private readonly resourceMapper: ExtensionBasedMapper;
+  private readonly resourceMapper: FileIdentifierMapper;
   private readonly metadataController: MetadataController;
 
-  public constructor(resourceMapper: ExtensionBasedMapper, metadataController: MetadataController) {
+  public constructor(resourceMapper: FileIdentifierMapper, metadataController: MetadataController) {
     this.resourceMapper = resourceMapper;
     this.metadataController = metadataController;
   }
diff --git a/test/unit/storage/ExtensionBasedMapper.test.ts b/test/unit/storage/ExtensionBasedMapper.test.ts
index 0932f89da..3e71357ef 100644
--- a/test/unit/storage/ExtensionBasedMapper.test.ts
+++ b/test/unit/storage/ExtensionBasedMapper.test.ts
@@ -1,6 +1,5 @@
 import fs from 'fs';
 import { ExtensionBasedMapper } from '../../../src/storage/ExtensionBasedMapper';
-import { ConflictHttpError } from '../../../src/util/errors/ConflictHttpError';
 import { NotFoundHttpError } from '../../../src/util/errors/NotFoundHttpError';
 import { UnsupportedHttpError } from '../../../src/util/errors/UnsupportedHttpError';
 import { trimTrailingSlashes } from '../../../src/util/Util';
@@ -136,22 +135,4 @@ describe('An ExtensionBasedMapper', (): void => {
       });
     });
   });
-
-  describe('extractDocumentName', (): void => {
-    it('throws an error if the input corresponds to root.', async(): Promise<void> => {
-      expect((): any => mapper.extractDocumentName({ path: base })).toThrow(ConflictHttpError);
-      expect((): any => mapper.extractDocumentName({ path: trimTrailingSlashes(base) }))
-        .toThrow(ConflictHttpError);
-    });
-
-    it('parses the identifier into container file path and document name.', async(): Promise<void> => {
-      expect(mapper.extractDocumentName({ path: `${base}test` })).toEqual({
-        containerPath: rootFilepath,
-        documentName: 'test',
-      });
-      expect(mapper.extractDocumentName({ path: `${base}test/` })).toEqual({
-        containerPath: `${rootFilepath}test/`,
-      });
-    });
-  });
 });