code: CmsTreeOpenState getVfsTreeState(String treeToken) {
  
          return (CmsTreeOpenState)(getRequest().getSession().getAttribute(
              getTreeOpenStateAttributeName(I_CmsGalleryProviderConstants.TREE_VFS, treeToken)));
      }
docs: Gets the VFS tree open state.<p>
  
  @param treeToken the tree token
  
  @return the VFS tree open state