public AzureChatMessage getDelta() {
        return this.delta;
    }
Get the delta property: The delta message content for a streaming response.

@return the delta value.
chat2db-server/chat2db-server-web/chat2db-server-web-api/src/main/java/ai/chat2db/server/web/api/controller/ai/azure/model/AzureChatChoice.java