Sample CodeReviewed 2026-07-21View on Apple Developer

Schema definitions for third-party DCCs

At a glance

Item	Summary
Purpose	Update your local USD library to add interactive and augmented reality features.
App architecture	The archive contains documentation/configuration but no scannable implementation from which to verify a runtime architecture.
Main patterns	None claimed; the source is code-light.
Project style	Documentation or project assets only.

Project structure

Source bundle/
└── README.md

Structure observations

No supported source-language declaration was found in the verified archive.
The notes below separate the documented intent from implementation facts that cannot be verified locally.

Overall architecture

flowchart LR
    Archive["Verified archive"] --> Documentation["README / configuration"]
    Documentation --> Workflow["Documented USD workflow"]

Reference code

README.md:1 — archive-provided description

# Schema Definitions for Third-Party DCCs

Update your local USD library to add interactive and augmented reality features.

For more information about the app and how it works, see
[Tracking and visualizing faces](https://developer.apple.com/documentation/realitykit/schema-definitions-for-third-party-dccs) in the developer documentation.

Interpretation

The diagram represents the evidence boundary, not an inferred class graph. The archive explains a workflow but does not provide enough implementation to assign runtime layers.

Ownership and state

No object, state, or mutation owner can be verified because the archive contains no scannable implementation declarations.

Owner	Object or state	Relationship	Mutation authority
Not present in source	Runtime state	Not verifiable	Not verifiable

Class and protocol design

No application class or protocol design is present in the downloaded source tree. Documentation prose is not treated as a concrete implementation.

Access control

The archive contains no private, fileprivate, internal, public, or open implementation declaration to evaluate.

Symbol	Access	Verified effect	Likely rationale
Not present	Not verifiable	No implementation boundary exists in the archive	No rationale inferred

Logic ownership and placement

Logic	Owning type or file	Placement rationale
Documented workflow	`README.md`	This is the only local source of behavioral intent.

Design patterns

No named application pattern is claimed because the verified bundle lacks the implementation required to support one.

Naming conventions

Type, protocol, method, and access-control naming cannot be evaluated from this code-light archive.
File naming follows documentation or build-configuration roles only.

Architecture takeaways

Treat missing implementation as an explicit evidence limit.
Do not infer ownership, protocol boundaries, or access rationale from documentation prose alone.
Use the official page for the conceptual workflow and this document for the verified archive boundary.

Source map

Source file	Relevant symbols
`README.md`	Archive-provided description; no runtime symbol

Official Apple documentation