Changes to List all files

added the enum value metadata to the property items/ of the query request parameter fields

added the optional property items/metadata to the response with the 200 status

the response's body type changed from no type to array for status 200

the response's body type changed from array to no type for status 200

added the enum value tags to the property items/ of the query request parameter fields

added the optional property items/tags to the response with the 200 status