@Builder fails with Guava's ImmutableTable

[Quincunx271]

The @Builder annotation doesn't know that Guava's ImmutableTable has a Builder (ImmutableTable.Builder). This means that the following class fails:

@Builder
class Example {
    private @Singular ImmutableTable table;
}

Since Lombok supports the builders of ImmutableMap, ImmutableSet, etc, it should probably support ImmutableTable's builder.