Function mpsgraph_graph_stack 

pub unsafe extern "C" fn mpsgraph_graph_stack(
    graph_handle: *mut c_void,
    tensor_handles: *const *mut c_void,
    tensor_count: usize,
    axis: isize,
    name: *const c_char,
) -> *mut c_void

Calls the MPSGraph framework counterpart for mpsgraph_graph_stack.