Trying to use custom fields in a record template

{$record->customFieldDisplayByKey('fuel', 'listing')|raw}

How would I use the above with the 

{{if}}

statement 

So that when the field is empty it is not displayed in template

Where is Marcher when you need him

Can't make it work

Tried 

{{ if $record->customFieldDisplayByKey('additional-image_136_137_138') }}
{$record->customFieldDisplayByKey('additional-image_136_137_138', 'display')|raw}
{{ endif }}

And get an config error

Just trying to hide empty fields

Try {{if count( $row->customFieldDisplayByKey('fuel','listing') )}}.

In one of my templates  I have

<div class='ipsDataItem_main'>{{if count( $row->customFieldDisplayByKey('area','listing') )}}
		<div class='ipsDataItem_meta'>  
				{$row->customFieldDisplayByKey('area', 'listing')|raw}
          </div>
          {{endif}}

and it's doing the job.

Excellent thank you

I had to just alter your code a bit to make it work in display templates

  	{{if count( $record->customFieldDisplayByKey('field_additional-image_136_137_138','display') )}}
		  
				{$record->customFieldDisplayByKey('field_additional-image_136_137_138', 'display')|raw}
         
          {{endif}}