AI-generated Key Takeaways
- 
          The document lists various Ad Manager API services for version v202505, including AdRuleService, AdjustmentService, and AdsTxtService. 
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          It details inheritance relationships, with ApiError as a base class and NotNullError being a specific type of error. 
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          The NotNullError includes fields inherited from ApiError such as fieldPath, fieldPathElements, trigger, and errorString, and also has a specific reason field with enumerated values like ARG1_NULL and UNKNOWN. 
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          The namespace for these services and errors is https://www.google.com/apis/ads/publisher/v202505.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202505
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| ApiError(inherited) | |
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| NotNullError | |
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 Enumerations 
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