Apigateway resourceForPath is not behaving as expected

[rremanan-bwi]

I have a common apigateway used by two environments.
I had a business case to add a resource into an existing apigateway.
I used the resourcePath to add resource as it said as below

Gets or create all resources leading up to the specified path.

But I am getting the error - "Another resource with the same parent already has this name" when I deploy second environment. The resource get created in apigateway during the first environment deployment.
This is how I used it
const newApiResource = restApi.root .resourceForPath('/path1') .resourceForPath('path2') .resourceForPath('path3');