Function hipGraphChildGraphNodeGetGraph 

pub unsafe extern "C" fn hipGraphChildGraphNodeGetGraph(
    node: hipGraphNode_t,
    pGraph: *mut hipGraph_t,
) -> hipError_t

@brief Gets a handle to the embedded graph of a child graph node.

@param [in] node - Instance of the node to get child graph of. @param [out] pGraph - Pointer to get the graph. @returns #hipSuccess, #hipErrorInvalidValue