pub unsafe extern "C" fn dm_tree_next_child(
handle: *mut *mut c_void,
parent: *const dm_tree_node,
inverted: u32,
) -> *mut dm_tree_node
pub unsafe extern "C" fn dm_tree_next_child(
handle: *mut *mut c_void,
parent: *const dm_tree_node,
inverted: u32,
) -> *mut dm_tree_node