interface conversion: interface {} is nil, not map[string]interface {} #51
Description
transport.NewCompoundServiceDesc().SwaggerDef()
return:
{"definitions":null,"paths":null}
expect:
{"definitions":{},"paths":{}}
or not panic in example
s1 := transport.NewCompoundServiceDesc()
s2 := transport.NewCompoundServiceDesc(s1)
s2.SwaggerDef() // <-- panic
I think you shouldn't call type cast before nil check
https://github.com/utrack/clay/blob/master/transport/swagcombo.go#L30-L36