AI-generated Key Takeaways
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The AdRuleService page provides information about the AdRuleService and its dependencies.
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Key elements discussed include FieldPathElement, which represents segments of a field path.
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FieldPathElement has two fields:
field(the name of a field) andindex(the position in a list for list fields). 
A segment of a field path. Each dot in a field path defines a new segment.
- Namespace
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https://www.google.com/apis/ads/publisher/v202508 
                        Field | 
                  |
|---|---|
                        
                           
                      | 
                     
                         
                            The name of a field in lower camelcase. (e.g. "biddingStrategy")  | 
                  
                        
                           
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                            For list fields, this is a 0-indexed position in the list. Null for non-list fields.  |