I'm completely befuddled with compiling, linking, binding, etc.

[WhatMeWorry]

I'm using DUB's bindbc-sdl.  I'm dynamically loading sdl3.dll 
which I've renamed.

trying to load SDL3 dynamic link library: 
C:\Users\kheas\OneDrive\Documents\GitHub\Dfine\libraries\SDL3_3_4_2.dll
loadSDL returned: success
Searching for SDL on Windows
3004002
Your SDL version loaded was: 3.4.2
SDL_Init returned: true

So, I read that SDL_Surface* SDL_LoadPNG(const char *file); was 
introduced in SDL3 version 3.4.0.  So I think yippie! I've got 
this already, I've loaded 3.4.2. No more SDL_image.

So I add the function call:

SDL_Surface* sur = SDL_LoadPNG("test.png");

which returns:

libraries\load_sdl_libraries.d(117,24): Error: undefined 
identifier `SDL_LoadPNG`
     SDL_Surface* sur = SDL_LoadPNG("test.png");

So I then add:

import bindbc.sdl : SDL_Surface, SDL_LoadPNG;

which then returns,

libraries\load_sdl_libraries.d(14,8): Error: module `bindbc.sdl` 
import `SDL_LoadPNG` not found import bindbc.sdl : SDL_Surface, 
SDL_LoadPNG;

I have the dub.sdl with what the docs say are most current. 
Double checked, SDL_LoadPNG is the correct name of the function.

dependency "bindbc-sdl" version="~>2.3.4"    // latest in the 
bindbc-sdl documentation
dependency "bindbc-loader" version="~>1.1.5" // latest in the 
bindbc-loader documentation
versions "SDL_3_4_2",                        // latest in the 
bindbc-sdl documentation

I'm stuck as to what to do next. Thanks in advance.