API 阶段
对您的 REST 或 WebSocket API 生命周期状态（例如，“dev”、“prod”、“beta”、“v2”）的逻辑引用。API 阶段由 API ID 和阶段名称标识。API stage
A logical reference to a lifecycle state of your REST or WebSocket API (for example, 'dev', 'prod', 'beta', 'v2'). API stages are identified by API ID and stage name.