oas2PolymorphicAnyOf
oas2PolymorphicAnyOf will check a specification to ensure that if it’s a Swagger specification (OpenAPI 2.0), then
it has not made use of anyOf.
Example ruleset configuration
oas2-anyOf:
description: "Check for invalid use of 'anyOf'"
type: "validation"
recommended: true
severity: "err"
given: "$"
then:
function: "oas2PolymorphicAnyOf"
The function is used by the oas2-anyOf Rule