public function dozent_search_instructor() {
		$search_term = dozent_input_text( 'search_term' );
		$course_id   = dozent_input_text( 'course_id' );

		$course = get_post( $course_id );

		$search_args = [
			'search_term' => $search_term,
			'start'       => 0,
			'per_page'    => "-1",
		];

		$attached_instructors_ids = dozent_get_attached_instructors_ids( $course );

		$not_in_ids = [];
		if ( ! empty( $course->post_author ) ) {
			$not_in_ids[] = $course->post_author;
		}

		if ( dozent_count( $attached_instructors_ids ) ) {
			$not_in_ids = array_merge( $not_in_ids, $attached_instructors_ids );
		}

		if ( dozent_count( $not_in_ids ) ) {
			$search_args['not_in_ids'] = $not_in_ids;
		}

		$instructors = dozent_get_instructors( $search_args );

		ob_start();
		include_once DOZENT_ABSPATH . '/views/metabox/part/instructors-search-results.php';
		$html = ob_get_clean();

		wp_send_json_success( [ 'html' => $html ] );
	}