private fun requestBodyOrNull(requestMethod: String): RequestBody? =
    if (requestMethod == "POST" || requestMethod == "PUT") "foo".toRequestBody("text/plain".toMediaType()) else null

  @Test
  fun postInvalidatesCache() {
    testMethodInvalidates("POST")
  }

  @Test
  fun putInvalidatesCache() {
    testMethodInvalidates("PUT")
  }

  @Test
  fun deleteMethodInvalidatesCache() {