Duplicate server variables in OpenAPI

Some one assist on this use case

Facing Duplicate server variables in OpenAPI documentation lead to maintenance issues and violate the DRY principle

Example:

servers:

  - name: Server 1

    variables:

      foo:

        $ref: '#/variables/foo'

  - name: Server 2

    variables:

      bar:

        $ref: '#/variables/bar'

variables:

  foo:

    value: 'foo-value'

  bar:

    value: 'bar-value'