ds = '';
		if ( ! empty( $this->args->ID ) ) {
			$keywords = get_post_meta( $this->args->ID, 'rank_math_focus_keyword', true );
		}

		if ( ! empty( $this->args->term_id ) ) {
			$keywords = get_term_meta( $this->args->term_id, 'rank_math_focus_keyword', true );
		}

		if ( ! is_string( $keywords ) ) {
			return null;
		}

		$keywords = explode( ',', $keywords );
		if ( '' !== $keywords[0] ) {
			return $keywords[0];
		}

		return null;
	}

	/**
	 * Get Focus keywords.
	 *
	 * @return string
	 */
	public function get_focus_keywords() {
		if ( is_singular() || is_category() || is_tag() || is_tax() ) {
			return Paper::get()->get_keywords();
		}

		$keywords = '';
		if ( ! empty( $this->args->ID ) ) {
			$keywords = get_post_meta( $this->args->ID, 'rank_math_focus_keyword', true );
		}

		if ( ! empty( $this->args->term_id ) ) {
			$keywords = get_term_meta( $this->args->term_id, 'rank_math_focus_keyword', true );
		}

		return $keywords;
	}

	/**
	 * Get the current page number as a string (i.e. "page 1 of 5").
	 *
	 * @return string
	 */
	public function get_page() {
		$sep  = $this->get_sep();
		$max  = $this->determine_max_pages();
		$page = $this->determine_page_number();

		if ( $max > 1 && $page > 1 ) {
			/* translators: %1$d: current page number, %2$d: max pages. */
			return sprintf( $sep . ' ' . __( 'Page %1$d of %2$d', 'rank-math' ), $page, $max );
		}

		return null;
	}

	/**
	 * Get only the page number (without context).
	 *
	 * @return string|null
	 */
	public function get_pagenumber() {
		$page = $this->determine_page_number();

		return $page > 0 ? (string) $page : null;
	}

	/**
	 * Get the max page number.
	 *
	 * @return string|null
	 */
	public function get_pagetotal() {
		$max = $this->determine_max_pages();

		return $max > 0 ? (string) $max : null;
	}

	/**
	 * Get a specific custom field value.
	 *
	 * @param  string $name The name of the custom field to retrieve.
	 * @return string|null
	 */
	public function get_customfield( $name ) {
		if ( Str::is_empty( $name ) ) {
			return null;
		}

		if ( ! empty( get_query_var( 'sitemap' ) ) && 'locations' !== get_query_var( 'sitemap' ) ) {
			return null;
		}

		if ( is_author() ) {
			return get_user_meta( $this->args->ID, $name, true );
		}

		if ( is_category() || is_tag() || is_tax() ) {
			return get_term_meta( $this->args->term_id, $name, true );
		}

		return is_singular() || ! empty( $this->args->post_type ) ? get_post_meta( $this->args->ID, $name, true ) : null;
	}

	/**
	 * Get the post type "single" label.
	 *
	 * @return string|null
	 */
	public function get_post_type_single() {
		$name = $this->determine_post_type_label( 'single' );

		return '' !== $name ? $name : null;
	}

	/**
	 * Get the post type "plural" label.
	 *
	 * @return string|null
	 */
	public function get_post_type_plural() {
		$name = $this->determine_post_type_label( 'plural' );

		return '' !== $name ? $name : null;
	}
}