FindDuplicates is a cli tool that finds duplicated names across packages in azure-sdk-for-net whose namespace starts with Azure..
You could go to directory FindDuplicates and use dotnet run and necessary argument to run the tool.
One required argument of this tool is the local root directory path of the azure-sdk-for-net repo:
dotnet run /path/to/azure-sdk-for-net
One option is targetPackage, if you specify this value, the results will be filtered to include only duplicates related to the target package.