Fix pht method calls

Summary: Ref T7046. This is mainly a proof-of-concept for D11661.

Test Plan: arc lint

Reviewers: epriestley, Blessed Reviewers

Reviewed By: epriestley, Blessed Reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T7046

Differential Revision: https://secure.phabricator.com/D11683