@Deprecated
    public GraphqlServiceBuilder schemaFile(Iterable<? extends File> schemaFiles) {
        requireNonNull(schemaFiles, "schemaFiles");
        return schemaUrls0(Streams.stream(schemaFiles)
                                  .map(file -> {
                                      try {
                                          return file.toURI().toURL();
                                      } catch (MalformedURLException e) {
                                          throw new UncheckedIOException(e);
                                      }
                                  }).collect(toImmutableList()));
    }
Adds the schema {@link File}s.
If not set, the {@code schema.graphql} or {@code schema.graphqls} will be imported from the resource.

@deprecated Use {@link #graphql(GraphQL)} instead. You can create a {@link TypeDefinitionRegistry}
            using {@link SchemaParser}, and then create {@link GraphQLSchema} using a
            {@link SchemaGenerator}. Then, set it to a {@link GraphQL.Builder}.
graphql/src/main/java/com/linecorp/armeria/server/graphql/GraphqlServiceBuilder.java