fun generateMappingTableFile(data: IdnaMappingTableData): FileSpec {
  val packageName = "okhttp3.internal.idn"
  val idnaMappingTable = ClassName(packageName, "IdnaMappingTable")

  return FileSpec.builder(packageName, "IdnaMappingTableInstance")
    .addProperty(
      PropertySpec.builder("IDNA_MAPPING_TABLE", idnaMappingTable)
        .addModifiers(KModifier.INTERNAL)
        .initializer(
          """
          |%T(⇥
          |sections = "%L",

  into("$buildDir/generated/sources/kotlinTemplates")
  expand("projectVersion" to project.version)
  filteringCharset = Charsets.UTF_8.toString()
}

// Build & use okhttp3/internal/idn/IdnaMappingTableInstance.kt
val generateIdnaMappingTableConfiguration: Configuration by configurations.creating
dependencies {
  generateIdnaMappingTableConfiguration(projects.okhttpIdnaMappingTable)
}