Conditions:
  DummyCondition: !Equals ['', '']

Resources:
  FunctionWithConditionalPolicy:
    Type: AWS::Serverless::Function
    Properties:
      Description: A function that has Fn::If in the policies property
      Handler: hello.handler
      Runtime: python2.7
      CodeUri: s3://sam-demo-bucket/hello.zip
      Policies:
      - !If
        - DummyCondition
        - !Sub arn:${AWS::Partition}:iam::aws:policy/AdministratorAccess
        - !Sub arn:${AWS::Partition}:iam::aws:policy/ReadOnlyAccess