class="org.codelibs.fess.crawler.client.storage.StorageClient" instance="prototype">
		<property name="charset">"UTF-8"</property>
	</component>

	<component name="s3Client"
		class="org.codelibs.fess.crawler.client.s3.S3Client" instance="prototype">
		<property name="charset">"UTF-8"</property>
	</component>

	<component name="gcsClient"
		class="org.codelibs.fess.crawler.client.gcs.GcsClient" instance="prototype">

            s3Client.headBucket(request);
            return true;
        } catch (final Exception e) {
            return false;
        }
    }

    @Override
    public void close() {
        if (s3Client != null) {
            s3Client.close();
        }
    }

    /**

- `file:.*` → FileSystemClient
- `smb:.*` → SmbClient (SMB2+), `smb1:.*` → SmbClient (SMB1)
- `ftp:.*`, `ftps:.*` → FtpClient
- `storage:.*` → StorageClient, `s3:.*` → S3Client, `gcs:.*` → GcsClient

### Cloud Storage Clients

- **S3Client**: AWS SDK v2, `s3://bucket/path`, properties: `endpoint`, `accessKey`, `secretKey`, `region`