message: Add converter test to `ServerCombinedErrorGeneratorTest.kt`
  So as to not regress on the functionality introduced in
diff: @@ -78,6 +78,14 @@ class ServerCombinedErrorGeneratorTest {
  """
  )
  + writer.unitTest(
  + name = "generates_converters_into_combined_error_enums",
  + test = """
  + let variant = InvalidGreeting { message: String::from("an error") };
  + let error: GreetingError = variant.into();
  + """
  + )
  +
  println("file:///${project.baseDir}/src/lib.rs")
  println("file:///${project.baseDir}/src/error.rs")
  project.compileAndTest()
  