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CamelDataWrapper

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data container with streaming methods

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<para>
A CamelDataWrapper is wrapper around data which can save them to a stream
and restore them from a stream. 
</para>

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<para>

</para>

<!-- ##### FUNCTION camel_data_wrapper_write_to_stream ##### -->
<para>

</para>

@data_wrapper: 
@stream: 


