[Chameleon] Output Fields and Aliases

[Abe Gillespie]

Is there a standard Chameleon API way of getting METADATA-defined
output fields and aliases.  I have an example mapfile that contains
the following METADATA items:

QUERY_ATTRIBUTES
RESULT_FIELDS
RESULT_FIELDS_LIMITED

I'm not sure if these are custom METADATA items or ones used
particularly with Chameleon.  If there's something already setup in
Chameleon to handle these, I'd rather go that route than risk
reproducing something that's already available.

Basically I want to be able to get the output fields for the LAYER. 
And then get the alias of each field.  I.e. something like:

$flds = $chameleonLayer->getOutputFields();
foreach ($flds as $f)
{
	$alias = $chameleonLayer->getFieldAlias($f);
	// Do some HTML output ...
}

Again, I can write the code to do this myself.  But I don't want to
reproduce something that might already be there.

Thanks.
-Abe