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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# NodeTemplate, RelationshipTemplate
#
def get_default_raw_from_copy(presentation, field_name):
"""
Used for the ``_get_default_raw`` field hook.
"""
copy = presentation._raw.get('copy')
if copy is not None:
templates = getattr(presentation._container, field_name)
if templates is not None:
template = templates.get(copy)
if template is not None:
return template._raw
return None
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