def _set_vlan_add(self, v, load=False):
    """
    Setter method for vlan_add, mapped from YANG variable /routing_system/evpn_config/evpn/evpn_instance/vlan/vlan_add (container)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_vlan_add is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_vlan_add() directly.
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=vlan_add.vlan_add, is_container='container', presence=False, yang_name="vlan-add", rest_name="", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Add/Remove VLANs from EVPN Instance', u'cli-drop-node-name': None}}, namespace='urn:brocade.com:mgmt:brocade-bgp', defining_module='brocade-bgp', yang_type='container', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """vlan_add must be of a type compatible with container""",
          'defined-type': "container",
          'generated-type': """YANGDynClass(base=vlan_add.vlan_add, is_container='container', presence=False, yang_name="vlan-add", rest_name="", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Add/Remove VLANs from EVPN Instance', u'cli-drop-node-name': None}}, namespace='urn:brocade.com:mgmt:brocade-bgp', defining_module='brocade-bgp', yang_type='container', is_config=True)""",
        })

    self.__vlan_add = t
    if hasattr(self, '_set'):
      self._set()