class GraphQL::Schema::Visibility::Profile

def non_duplicate_items(definitions, visibility_cache)
  non_dups = []
  names = Set.new
  definitions.each do |defn|
    if visibility_cache[defn]
      if !names.add?(defn.graphql_name)
        dup_defn = non_dups.find { |d| d.graphql_name == defn.graphql_name }
        raise_duplicate_definition(dup_defn, defn)
      end
      non_dups << defn
    end
  end
  non_dups
end