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Description
Closes: #1535
Motivation and Context
The whatif input provider allows you to use a composite CMDB to create and query deployments before actually deploying the changes you've made in your CMDB
Input sources are primarily handled the same way as the composite input source except for StackOutputs. The whatif provider checks to see if a composite stack output can be found and if it can't then it will return a mocked output instead
This allows you to add components to a CMDB to see what they will create before deploying any of their required components. This is really helpful when generating diagrams or running through demonstrations where you don't want to wait for deployments to complete
How Has This Been Tested?
Tested locally
Types of changes
Followup Actions
Checklist: