add_cache_block

Must be after <code>nest_parse_data()</code> because requires a nested parse table as
input.

internal

Pretty-prints R code without changing the user's formatting
intent.

<dl><dt>pd_nested</dt>
<dd>A top-level nest.</dd></dl>

<dl>

<dt>pd_nested</dt>
<dd>A top-level nest.</dd>

</dl>