221:    attach_pdf_template_id = Column(Integer, ForeignKey("email_templates.id", ondelete="SET NULL"))
268:    generated_template_id = Column(Integer, ForeignKey("email_templates.id", ondelete="SET NULL"))
301:    html_source_template_id = Column(Integer, ForeignKey("email_templates.id", ondelete="SET NULL"))
3
cleaned