Astra_Cache_Base::get_post_timestamp( string $assets_info )

	public function get_post_timestamp( $assets_info ) {
		// Check if current page is a post/ archive page. false states that the current page is a post.
		if ( 'single' === $this->asset_query_var ) {
			$post_timestamp = get_post_meta( get_the_ID(), 'astra_style_timestamp_css', true );
		} else {
			$post_timestamp = get_option( 'astra_get_dynamic_css' );
		}

		$timestamp_data = $this->maybe_get_new_timestamp( $post_timestamp, $assets_info );

		return $timestamp_data;
	}