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AWS::Logs::Transformer CopyValue
This processor copies values within a log event. You can also use this processor to
            add metadata to log events by copying the values of the following metadata keys into the
            log events: @logGroupName, @logGroupStream,
                @accountId, @regionName. 
For more information about this processor including examples, see copyValue in the CloudWatch Logs User Guide.
Syntax
To declare this entity in your Amazon CloudFormation template, use the following syntax:
JSON
{ "Entries" :[ CopyValueEntry, ... ]}
YAML
Entries:- CopyValueEntry
Properties
- Entries
- 
                    An array of CopyValueEntryobjects, where each object contains the information about one field value to copy.Required: Yes Type: Array of CopyValueEntry Minimum: 1Maximum: 5Update requires: No interruption