Error when configuring openconfig mpls SRLG object

[ghost]

Below YDK script(using YDK 0.4.2) causes infinite recursion loop:

from ydk.providers import NetconfServiceProvider
from ydk.services import CRUDService
from ydk.models.openconfig.openconfig_mpls import Mpls
crud = CRUDService()
ncc = NetconfServiceProvider(address='127.0.0.1' , username='admin', password='admin', port=12022)

config_reference = Mpls.TeGlobalAttributes.Srlg.Srlg.Config()
config_reference.name = 'Hello'
srlg_reference = Mpls.TeGlobalAttributes.Srlg.Srlg()
srlg_reference.name = 'Hello'
srlg_reference = Mpls.TeGlobalAttributes.Srlg()
srlg_reference.srlg.append(srlg_reference)
srlg_reference = Mpls.TeGlobalAttributes.Srlg()
te_global_attributes_reference = Mpls.TeGlobalAttributes()
mpls_reference = Mpls()
te_global_attributes_reference.parent = mpls_reference
srlg_reference.parent = te_global_attributes_reference
srlg_reference.parent = srlg_reference
config_reference.parent = srlg_reference
crud.create(ncc,config_reference)

Error is below:

...
    set_parent_imeta(entity.parent, entity.i_meta)
  File "ydk-gen/gen-api/python/ydk/services/meta_service.py", line 108, in set_parent_imeta
    set_parent_imeta(entity.parent, entity.i_meta)
  File "ydk-gen/gen-api/python/ydk/services/meta_service.py", line 108, in set_parent_imeta
    set_parent_imeta(entity.parent, entity.i_meta)
  File "ydk-gen/gen-api/python/ydk/services/meta_service.py", line 103, in set_parent_imeta
    if isinstance(entity, YList) or isinstance(entity, YLeafList) or isinstance(entity, YListItem):
RuntimeError: maximum recursion depth exceeded while calling a Python object