createTemplateObject error

[Steven Moore]

I may have figured out a problem to my template display but I can't find where $this is defined so I can properly update the code to reflect:

XenForo_XXXXX::createTemplateObject

Here is the error:

Fatal error: Call to undefined method xPortal_ControllerPublic_Index::createTemplateObject()

The line with the code using $this:

$xplft['temp_template'] = $this->createTemplateObject($xplft['temp_template'], $xplft);

Any help much appreciated.