Joel McCance

Invalid type aliases generated on recursive types

7

### Summary When fragments have a recursive structure, the generated type alias can become self-referencing and the module can't compile. ```swift /Users/jmccance/Development/apollographql-typealias-references-itself/MySchema/Sources/Operations/Queries/GetLinksQuery.graphql.swift:123:28: error: type alias 'Link' references itself public typealias...