public function wp_newComment( $args ) {
		$this->escape( $args );

		$username       = $args[1];
		$password       = $args[2];
		$post           = $args[3];
		$content_struct = $args[4];

		/**
		 * Filters whether to allow anonymous comments over XML-RPC.
		 *
		 * @since 2.7.0
		 *
		 * @param bool $allow Whether to allow anonymous commenting via XML-RPC.
		 *                    Default false.
		 */
		$allow_anon = apply_filters( 'xmlrpc_allow_anonymous_comments', false );

		$user = $this->login( $username, $password );

		if ( ! $user ) {
			$logged_in = false;
			if ( $allow_anon && get_option( 'comment_registration' ) ) {
				return new IXR_Error( 403, __( 'You must be registered to comment.' ) );
			} elseif ( ! $allow_anon ) {
				return $this->error;
			}
		} else {
			$logged_in = true;
		}

		if ( is_numeric( $post ) ) {
			$post_id = absint( $post );
		} else {
			$post_id = url_to_postid( $post );
		}

		if ( ! $post_id ) {
			return new IXR_Error( 404, __( 'Invalid post ID.' ) );
		}

		if ( ! get_post( $post_id ) ) {
			return new IXR_Error( 404, __( 'Invalid post ID.' ) );
		}

		if ( ! comments_open( $post_id ) ) {
			return new IXR_Error( 403, __( 'Sorry, comments are closed for this item.' ) );
		}

		if ( empty( $content_struct['content'] ) ) {
			return new IXR_Error( 403, __( 'Comment is required.' ) );
		}

		$comment = array(
			'comment_post_ID' => $post_id,
			'comment_content' => $content_struct['content'],
		);

		if ( $logged_in ) {
			$display_name = $user->display_name;
			$user_email   = $user->user_email;
			$user_url     = $user->user_url;

			$comment['comment_author']       = $this->escape( $display_name );
			$comment['comment_author_email'] = $this->escape( $user_email );
			$comment['comment_author_url']   = $this->escape( $user_url );
			$comment['user_ID']              = $user->ID;
		} else {
			$comment['comment_author'] = '';
			if ( isset( $content_struct['author'] ) ) {
				$comment['comment_author'] = $content_struct['author'];
			}

			$comment['comment_author_email'] = '';
			if ( isset( $content_struct['author_email'] ) ) {
				$comment['comment_author_email'] = $content_struct['author_email'];
			}

			$comment['comment_author_url'] = '';
			if ( isset( $content_struct['author_url'] ) ) {
				$comment['comment_author_url'] = $content_struct['author_url'];
			}

			$comment['user_ID'] = 0;

			if ( get_option( 'require_name_email' ) ) {
				if ( 6 > strlen( $comment['comment_author_email'] ) || '' == $comment['comment_author'] ) {
					return new IXR_Error( 403, __( 'Comment author name and email are required.' ) );
				} elseif ( ! is_email( $comment['comment_author_email'] ) ) {
					return new IXR_Error( 403, __( 'A valid email address is required.' ) );
				}
			}
		}

		$comment['comment_parent'] = isset( $content_struct['comment_parent'] ) ? absint( $content_struct['comment_parent'] ) : 0;

		/** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
		do_action( 'xmlrpc_call', 'wp.newComment' );

		$comment_ID = wp_new_comment( $comment, true );
		if ( is_wp_error( $comment_ID ) ) {
			return new IXR_Error( 403, $comment_ID->get_error_message() );
		}

		if ( ! $comment_ID ) {
			return new IXR_Error( 403, __( 'Something went wrong.' ) );
		}

		/**
		 * Fires after a new comment has been successfully created via XML-RPC.
		 *
		 * @since 3.4.0
		 *
		 * @param int   $comment_ID ID of the new comment.
		 * @param array $args       An array of new comment arguments.
		 */
		do_action( 'xmlrpc_call_success_wp_newComment', $comment_ID, $args ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase

		return $comment_ID;
	}