apply_filters( "theme_{$post_type}_templates", array $post_templates, WP_Theme $this, WP_Post|null $post, string $post_type )

Parameters

$post_templates

(array) Array of page templates. Keys are filenames, values are translated names.

$this

(WP_Theme) The theme object.

$post

(WP_Post|null) The post being edited, provided for context, or null.

$post_type

(string) Post type to get the templates for.