this.resourceLoc = resourceLoc;
        this.treeConnection = treeConnection.acquire();
    }

    @Override
    public SmbSessionImpl getSession() {
        return this.treeConnection.getSession();
    }

    @Override
    public void ensureDFSResolved() throws CIFSException {
        this.treeConnection.ensureDFSResolved(this.resourceLoc);
    }

    @Override

            }, validationErrorLambda);
            return null;
        });
    }

    private OptionalThing<HttpSession> getSession() {
        final HttpSession session = request.getSession(false);
        if (session != null) {
            return OptionalEntity.of(session);
        }
        return OptionalEntity.empty();
    }

    }

    @Test
    @DisplayName("getSession(): may return null and should be observed as such")
    void getSession_returnsNull() {
        // Arrange
        when(handle.getSession()).thenReturn(null);

        // Act
        SmbSession result = handle.getSession();

        // Assert
        assertNull(result);
        verify(handle).getSession();
    }

    @Test

     *
     * @return session that this file has been loaded through
     */
    @SuppressWarnings("resource")
    public SmbSessionImpl getSession() {
        final SmbTreeImpl t = getTreeInternal();
        if (t != null) {
            return t.getSession();
        }
        return null;
    }

    /**
     *
     * Only call this method while holding a tree handle
     *

    }

    @Test
    @DisplayName("getSession returns underlying session from tree connection")
    void getSessionReturnsUnderlying() {
        // Verifies getSession() exposes the session provided by the connection
        assertSame(session, handle.getSession());
        verify(treeConnection).getSession();
    }

    @Test

        // Setup request session
        lenient().when(request.getSession()).thenReturn(session);
        lenient().when(request.getSession(false)).thenReturn(session);
        lenient().when(request.getSession(true)).thenReturn(session);

        // Setup default session attribute behavior

    @Test
    void testService_NoAuthHeader_NoSession() throws ServletException, IOException {
        ntlmServlet.init(servletConfig);
        when(request.getHeader("Authorization")).thenReturn(null);
        when(request.getSession(false)).thenReturn(null);
        lenient().when(request.isSecure()).thenReturn(true);

        ntlmServlet.service(request, response);

        verify(response).setHeader("WWW-Authenticate", "NTLM");

                resp.flushBuffer();
                return null;
            }
            req.getSession().setAttribute("NtlmHttpAuth", ntlm);
        } else if (!skipAuthentication) {
            final HttpSession ssn = req.getSession(false);
            if (ssn == null || (ntlm = (NtlmPasswordAuthentication) ssn.getAttribute("NtlmHttpAuth")) == null) {

            return transport.getNegotiateResponse().isDFSSupported();
        }
    }

    /**
     * @return the session this tree is connected in
     */
    public SmbSessionImpl getSession() {
        return this.session.acquire();
    }

    /**
     * @return the tid
     */
    public int getTid() {
        return this.tid;
    }

    /**

    
    // Determine handle type based on configuration and server capabilities
    if (tree.getSession().supports(SMB3_0) && config.isUsePersistentHandles()) {
        handleType = HandleType.PERSISTENT;
    } else if (tree.getSession().supports(SMB3_0)) {
        handleType = HandleType.DURABLE_V2;
    } else if (tree.getSession().supports(SMB2_1)) {
        handleType = HandleType.DURABLE_V1;
    } else {