diff --git a/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/SftpFileSystemProvider.java b/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/SftpFileSystemProvider.java
index 9bf25b7..6b05074 100644
--- a/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/SftpFileSystemProvider.java
+++ b/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/SftpFileSystemProvider.java
@@ -1,4 +1,14 @@
 package org.xbib.files.sftp.jadaptive.fs;
 
+import java.nio.channels.ByteChannel;
+import java.nio.file.OpenOption;
+import java.nio.file.Path;
+import java.util.Set;
+
 public class SftpFileSystemProvider {
+
+    public ByteChannel newByteChannel(Path path, Set<? extends OpenOption> options) {
+        return null;
+    }
+
 }
diff --git a/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/spi/SFTPContext.java b/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/spi/SFTPContext.java
index c29bb28..ff0c866 100644
--- a/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/spi/SFTPContext.java
+++ b/files-sftp-jadaptive-fs/src/main/java/org/xbib/files/sftp/jadaptive/fs/spi/SFTPContext.java
@@ -1,39 +1,23 @@
 package org.xbib.files.sftp.jadaptive.fs.spi;
 
+import org.xbib.files.sftp.jadaptive.fs.SftpFileSystem;
+import org.xbib.files.sftp.jadaptive.fs.SftpFileSystemProvider;
+
 import java.io.Closeable;
 import java.io.IOException;
 import java.net.URI;
 import java.util.Map;
 
-import org.xbib.files.sftp.jadaptive.fs.SftpFileSystem;
-import org.xbib.files.sftp.jadaptive.fs.SftpFileSystemProvider;
-
 public class SFTPContext implements Closeable {
 
-    final SftpFileSystemProvider provider;
+    SftpFileSystemProvider provider;
 
-    final SftpFileSystem fileSystem;
+    SftpFileSystem fileSystem;
 
     public SFTPContext(URI uri, Map<String, ?> env) throws IOException {
-        this.sshClient = ClientBuilder.builder().build();
-        Object object = env.get("workers");
-        if (object instanceof Integer) {
-            sshClient.setNioWorkers((Integer) object);
-        } else if (object instanceof String) {
-            sshClient.setNioWorkers(Integer.parseInt((String) object));
-        } else {
-            // we do not require a vast pool of threads
-            sshClient.setNioWorkers(1);
-        }
-        sshClient.start();
-        this.provider = new SftpFileSystemProvider(sshClient);
-        this.fileSystem = provider.newFileSystem(uri, env);
     }
 
     @Override
     public void close() throws IOException {
-        sshClient.stop();
-        sshClient.close();
-        fileSystem.close();
     }
 }