* @return Integer
         */
        public Integer echo(final Integer arg) {
            return arg;
        }

        /**
         *
         */
        public void throwException() {
            throw new IllegalStateException("hoge");
        }
    }

    /**
     *
     */
    public class MyBean2 {
        /**
         *
         */

          } else { // (c)
            readMoreChars();
          }
        } else if (result.isError()) {
          // Only reach here if a CharsetEncoder with non-REPLACE settings is used.
          result.throwException();
          return 0; // Not called.
        }
      }
    }
  }

  /** Returns a new CharBuffer identical to buf, except twice the capacity. */
  private static CharBuffer grow(CharBuffer buf) {

    try {
      try {
        throw thrownException;
      } catch (Throwable e) {
        throw closer.rethrow(thrownException, IOException.class);
      } finally {
        assertThat(thrownException.getSuppressed()).isEmpty();
        closer.close();
      }
    } catch (IOException caught) {
      assertThat(caught).isEqualTo(thrownException);
    }

    assertTrue(c1.isClosed());

    try {
      try {
        throw thrownException;
      } catch (Throwable e) {
        throw closer.rethrow(thrownException, IOException.class);
      } finally {
        assertThat(thrownException.getSuppressed()).isEmpty();
        closer.close();
      }
    } catch (IOException caught) {
      assertThat(caught).isEqualTo(thrownException);
    }

    assertTrue(c1.isClosed());

            doThrow(testException).when(mockSession).close();

            Exception thrownException = assertThrows(Exception.class, mockSession::close, "close() should propagate exceptions");
            assertEquals("Test close exception", thrownException.getMessage());
        }
    }

    @Nested
    @DisplayName("Configuration Access Tests")
    class ConfigurationAccessTest {

        when(mockDelegate.getResponseTimeout()).thenThrow(testException);

        // When & Then
        RuntimeException thrownException = assertThrows(RuntimeException.class, () -> {
            delegatingConfig.getResponseTimeout();
        });

        assertSame(testException, thrownException, "Should propagate exception from delegate");
        verify(mockDelegate).getResponseTimeout();
    }

    @Test