You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: boostable.go
    path of file: ./repos/gotosocial/internal/filter/visibility
    
    the code of the file until where you have to start completion: // GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License
    
func (f *Filter) StatusBoostable(ctx context.Context, requester *gtsmodel.Account, status *gtsmodel.Status) (bool, error) {
	if status.Visibility == gtsmodel.VisibilityDirect {
		log.Trace(ctx, "direct statuses are not boostable")
		return false, nil
	}

	// Check whether status is visible to requesting account.
	visible, err := f.StatusVisible(ctx, requester, status)
	if err != nil {
		return false, err
	}

	if !visible {
		log.Trace(ctx, "status not visible to requesting account")
		return false, nil
	}

	if requester.ID == status.AccountID {
		// Status author can always boost non-directs.
		return true, nil
	}

	if status.Visibility == gtsmodel.VisibilityFollowersOnly ||
		status.Visibility == gtsmodel.VisibilityMutualsOnly {
		log.Trace(ctx, "unauthored %s status not boostable", status.Visibility)
		return false, nil
	}

	if !*status.Boostable {
		log.Trace(ctx, "status marked not boostable")
		return false, nil
	}

	return true, nil
}