@Override
              public boolean hasNext() {
                return !called;
              }
This test ensures that the doNotCloseAfterDecode flag functions.

<p>It does so by creating a custom Decoder that lazily retrieves the response body when asked
for it and pops the value into an Iterator.

<p>Without the doNoCloseAfterDecode flag, the test will fail with a "stream is closed"
exception.
core/src/test/java/feign/FeignBuilderTest.java