Conference::getRuntimeChatField

static function getRuntimeChatField(): array
{
	return [
		new EntityReferenceField(
			'CHAT', 'BitrixImModelChatTable', ['=this.CHAT_ID' => 'ref.ID']
		),
		new EntityReferenceField(
			'RELATION', 'BitrixImModelRelationTable', ['=this.CHAT_ID' => 'ref.CHAT_ID'], ['join_type' => 'inner']
		)
	];
}