AI-generated Key Takeaways
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          ChangeHistoryValue is an unused class that provides reference documentation for ChangeHistoryEntityType and ChangeHistoryOperation. 
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          The ChangeHistoryValue class inherits from Value and ObjectValue. 
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          The ChangeHistoryValue class has fields for entityTypeandoperation.
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          entityTypeis an enumeration representing various entities like COMPANY, CREATIVE, LINE_ITEM, etc.
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          operationis an enumeration representing operations like CREATE, UPDATE, or DELETE.
This class is unused. It exists only to provide reference documentation of the possible values for type and ChangeHistoryOperation.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| Value(inherited) | |
| ObjectValue(inherited) | |
| ChangeHistoryValue | |
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