Filter-variable in .graphql-files yields to build fail in Xcode

[fabriziof]

Hi,

When I include a graphql-query that uses a filter-variable in my project, the project cannot build.
For example, the following query includes a variable of type 'UserFilter':

query User($filter: UserFilter!) { allUsers(filter: $filter){ id } }

When building the project, Apollo creates the API-file that now includes all Filter-types for every type in my schema. For every struct that represents a filter, the following error shows up:

[martijnwalraven]

This should be fixed in apollo-codegen 0.16.2.