return null;
        }
        return str;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbResourceLocator#getDfsPath()
     */
    @Override
    public String getDfsPath() {
        if (this.dfsReferral == null) {
            return null;
        }

        assertEquals(dr, l.getDfsReferral());
        assertEquals("dfs-server", l.getServerWithDfs());
        assertEquals("smb://dfs-server/dfs-share" + l.getUNCPath().replace('\\', '/'), l.getDfsPath());
        assertEquals("dfs-share", l.getShare());

        // Path consumed negative -> coerced to 0
        when(dr.getPathConsumed()).thenReturn(-1);
        String unc2 = l.handleDFSReferral(dr, null);