to_xml
Description:
Returns a freshly allocated \0 terminated string containing a XML serialization of the composition produced by a node (and thus also the nodes contributing data to the specified node).
To export a gegl graph, connect the internal output node to an output proxy (see get_output_proxy.) and use the proxy node as the basis for the serialization.
Parameters:
| this |
a Node |
| path_root |
filesystem path to construct relative paths from. |