display = apply_filters(
				'Easy_Plugins/Table_Of_Contents/Debug/Display',
				defined( 'WP_DEBUG_DISPLAY' ) && WP_DEBUG_DISPLAY
			);
			self::$instance->enabled = apply_filters(
				'Easy_Plugins/Table_Of_Contents/Debug/Enabled',
				( defined( 'WP_DEBUG' ) && WP_DEBUG ) && current_user_can( 'manage_options' )
			);
		} else {
			if ( ! empty( $code ) && ! empty( $message ) ) {
				self::$instance->add( $code, $message, $data );
			}
		}
		return self::$instance;
	}
	/**
	 * Adds an error or appends an additional message to an existing error.
	 *
	 * NOTE: Overrides WP_Error::add() to allow support of passing `false` as `$data`.
	 *
	 * @since 2.0.14
	 *
	 * @param string|int $code    Error code.
	 * @param string     $message Error message.
	 * @param mixed      $data    Optional. Error data.
	 */
	public function add( $code, $message, $data = null ) {
		$this->errors[ $code ][] = $message;
		if ( ! is_null( $data ) ) {
			$this->add_data( $data, $code );
		}
		/**
		 * Fires when an error is added to a WP_Error object.
		 *
		 * @since 5.6.0
		 *
		 * @param string|int $code     Error code.
		 * @param string     $message  Error message.
		 * @param mixed      $data     Error data. Might be empty.
		 * @param WP_Error   $wp_error The WP_Error object.
		 */
		do_action( 'wp_error_added', $code, $message, $data, $this );
	}
	/**
	 * @since 2.0.13
	 *
	 * @param string $content
	 *
	 * @return string
	 */
	public function appendTo( $content = '' ) {
		return $content . $this;
	}
	/**
	 * @since 2.0.13
	 *
	 * @return string
	 */
	public function dump() {
		$dump = array();
		foreach ( (array) $this->errors as $code => $messages ) {
			$data = $this->get_error_data( $code );
			$data = is_string( $data ) ? $data : '' . var_export( $data, true ) . '';
			$data = "\t\t
WP_DEBUG and WP_DEBUG_DISPLAY are enabled on this site. Please disabled these to prevent the display of these developers\' debug messages.',
			'https://codex.wordpress.org/WP_DEBUG'
		);
		$intro = PHP_EOL . "{$intro}
" .PHP_EOL; $dump = $this->dump(); return PHP_EOL . "" . PHP_EOL; } }