[FIX] P3: metaclasses handling

* cross-version metaclass spec
* more formally deprecate browse_record and browse_null since they
  were using metaclasses anyway
* update docstrings referencing the latter

1 files changed, 1 insertions, 6 deletions

diff --git a/odoo/cli/command.py b/odoo/cli/command.py
index 503ffcb360a..cf9a41095d6 100644
--- a/odoo/cli/command.py
+++ b/odoo/cli/command.py
@@ -17,12 +17,7 @@ class CommandType(type):
         if name != 'command':
             commands[name] = cls
 
-class Command(object):
-    """Subclass this class to define new odoo subcommands """
-    __metaclass__ = CommandType
-
-    def run(self, args):
-        pass
+Command = CommandType('Command', (object,), {'run': lambda self, args: None})
 
 class Help(Command):
     """Display the list of available commands"""