Function cuvsCagraSerializeGraph 

pub unsafe extern "C" fn cuvsCagraSerializeGraph(
    res: cuvsResources_t,
    filename: *const c_char,
    index: cuvsCagraIndex_t,
) -> cuvsError_t

@defgroup cagra_c_index_serialize CAGRA C-API serialize functions @{ / /** Save the CAGRA graph to file without its dataset.

Experimental, both the API and the serialization format are subject to change.

@param[in] res cuvsResources_t opaque C handle @param[in] filename the file name for saving the graph @param[in] index CAGRA index