Get a valid OpenAPI 3.0 document with all REST APIs available from a Liberty instance

Returns a valid OpenAPI 3.0 document with all REST APIs available from a Liberty instance merged into a single document. This is useful for consumer applications that want to programmatically navigate the set of available APIs, such as an API Management solution. By default, the document is returned in YAML format. Including an optional 'Accept' header with an 'application/json' value provides the document in JSON format. This endpoint has two multiple-cardinality, optional query parameters called 'root' that can filter the found context roots and 'compact' that can control whether the output should be formatted or not.