I have a `test.md` that looks like this:

```

# test

# test {#test}

```

I ran `pandoc test.md --to latex --from markdown` and expected to get the following:

```

[WARNING] Duplicate identifier 'test' at line 6 column 1
\hypertarget{test}{%
\section{test}\label{test}}

\hypertarget{test}{%
\section{test}\label{test}}

```

Turning `auto_identifiers` off "fixes" this by not giving the first instance a label. But shouldn't `auto_identifiers` be able to automatically label headings while taking into account existing IDs?