public function render( $atts, $content = null, $tag = null ) {

		if ( is_callable( $this->callback ) ) {
			$content = call_user_func( $this->callback, $atts, $content, $tag );
		}

		/**
		 * Filters the shortcode content.
		 *
		 * @param  string $content This shortcode's rendered content.
		 * @param  array  $atts    The attributes used to invoke this shortcode.
		 * @param  string $tag     This shortcode tag.
		 * @return string          This shortcode's filtered content.
		 *
		 * @deprecated since 0.3.2. Use the `syllables/shortcode/output` filter hook.
		 */
		return \apply_filters( 'syllables/shortcode/render', $content, $atts, $tag );
	}