openapi3gen does not generate nullable: true for pointers #968
Description
This should include "nullable": true
https://github.com/getkin/kin-openapi/blob/master/openapi3gen/openapi3gen_test.go#L115-L117
This issue is not possible to fix using openapi3gen.SchemaCustomizer because reflect.Type passed into openapi3.SchemaCustomizerFn is never a pointer.