def unshare_library(repo_id,share_type,user,group_id)
      delete_unshare_library(repo_id,share_type,user,group_id)
    end
def unshare_library(repo_id,share_type,user,group_id)
      delete_unshare_library(repo_id,share_type,user,group_id)
    end
TODO need test not working wrong user error