parse_transform实例
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lager_transform:parse_transform/2
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参数实例:

.. literalinclude:: /files/erlangs/lager_transform_demo.erl
   :linenos:
   :language: erlang

转化前文件:

.. literalinclude:: /files/erlangs/lager_transform_parse.erl
   :linenos:
   :language: erlang

转化后文件:

.. literalinclude:: /files/erlangs/lager_transform_parsed.erl
   :linenos:
   :language: erlang