model: remove key_removable from metatable

1 files changed, 3 insertions, 3 deletions

diff --git a/aconf/model/node.lua b/aconf/model/node.lua
index 9b69571..9a4f477 100644
--- a/aconf/model/node.lua
+++ b/aconf/model/node.lua
@@ -117,13 +117,13 @@ function M.TreeNode:init(context, params)
       return not isinstance(v, M.TreeNode) or getmetatable(v).removable()
    end
 
-   function mt.key_removable(k)
+   local function key_removable(k)
       return params.editable and
 	 mt.value_removable(mt.load(k, {dereference=false}))
    end
 
    function mt.check_removable(k, v)
-      if v == nil and not mt.key_removable(k) then
+      if v == nil and not key_removable(k) then
 	 raise(pth.join(mt.path, k), 'Cannot be deleted')
       end
    end
@@ -143,7 +143,7 @@ function M.TreeNode:init(context, params)
       local res = copy(mt._meta)
       res.removable = {}
       for _, key in ipairs(mt.members()) do
-	 if mt.key_removable(key) then table.insert(res.removable, key) end
+	 if key_removable(key) then table.insert(res.removable, key) end
       end
       return res
    end