Failing generation on beta validation pipeline due to missing IDataSourceWithReferenceRequestBuilder

[Andrew Omondi]

From the pipeline link below
https://microsoftgraph.visualstudio.com/Graph%20Developer%20Experiences/_build/results?buildId=73749&view=logs&j=12f1170f-54f2-53f3-20dd-22fc7dff55f9&t=006e6f7c-8314-5e02-a3df-483f3a1f4cfa

Generation seems to fail in dotnet due to the compile error

##[error]src/Microsoft.Graph/Generated/securitynamespace/requests/EdiscoverySearchCustodianSourcesCollectionWithReferencesRequestBuilder.cs(56,16): Error CS0246: The type or namespace name 'IDataSourceWithReferenceRequestBuilder' could not be found (are you missing a using directive or an assembly reference?)
/home/vsts/work/1/s/msgraph-sdk-dotnet/src/Microsoft.Graph/Generated/securitynamespace/requests/EdiscoverySearchCustodianSourcesCollectionWithReferencesRequestBuilder.cs(56,16): error CS0246: The type or namespace name 'IDataSourceWithReferenceRequestBuilder' could not be found (are you missing a using directive or an assembly reference?) [/home/vsts/work/1/s/msgraph-sdk-dotnet/src/Microsoft.Graph/Microsoft.Graph.csproj]
##[error]src/Microsoft.Graph/Generated/securitynamespace/requests/IEdiscoverySearchCustodianSourcesCollectionWithReferencesRequestBuilder.cs(37,9): Error CS0246: The type or namespace name 'IDataSourceWithReferenceRequestBuilder' could not be found (are you missing a using directive or an assembly reference?)
/home/vsts/work/1/s/msgraph-sdk-dotnet/src/Microsoft.Graph/Generated/securitynamespace/requests/IEdiscoverySearchCustodianSourcesCollectionWithReferencesRequestBuilder.cs(37,9): error CS0246: The type or namespace name 'IDataSourceWithReferenceRequestBuilder' could not be found (are you missing a using directive or an assembly reference?) [/home/vsts/work/1/s/msgraph-sdk-dotnet/src/Microsoft.Graph/Microsoft.Graph.csproj]

Ideally the request builder should exist in the target namespace and will need to be investigated to understand the issue.