*/
@GwtCompatible
abstract class CommonMatcher {
  public abstract boolean matches();

  public abstract boolean find();

  public abstract boolean find(int index);

  public abstract String replaceAll(String replacement);

  public abstract int end();

  public abstract int start();

        if (o instanceof byte[]) {
            return (byte[]) o;
        } else if (o == null) {
            return null;
        } else {
            assertArgument("o", o instanceof String, o.getClass().toString());
            return ((String) o).getBytes();
        }
    }

    }

    /**
     * Test for the toString method.
     * It should return a string containing the class name.
     */
    @Test
    void testToString() {
        String toString = response.toString();
        assertTrue(toString.contains("SmbComBlankResponse"), "toString should contain the class name");
    }

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public ToolchainsBuilderException(String message, Exception e) {
        super(message, e);
    }

    public ToolchainsBuilderException(String message, ProblemCollector<BuilderProblem> problems) {
        super(message, problems);
    }

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public SettingsBuilderException(String message, Exception e) {
        super(message, e);
    }

    public SettingsBuilderException(String message, ProblemCollector<BuilderProblem> problems) {
        super(message, problems);
    }

    public ModelTransformerException() {
        this(null, null);
    }

    public ModelTransformerException(String message) {
        this(message, null);
    }

    public ModelTransformerException(Throwable cause) {
        this(null, cause);
    }

    public ModelTransformerException(String message, Throwable cause) {
        super(message, cause);
    }

    /**
     * @return The name of key to find in the REST test
     */
    String getKeyToFind();

    /**
     * @return If the value of the ObjectNode is also an ObjectNode, ensure that child key name is also satisfied.
     * {@code null} to indicate no required children.
     */
    default String requiredChildKey() {
        return null;
    }

    /**

    printEvent("callStart");
  }

  @Override public void callEnd(Call call) {
    printEvent("callEnd");
  }

  @Override public void dnsStart(Call call, String domainName) {
    printEvent("dnsStart");
  }

  @Override public void dnsEnd(Call call, String domainName, List<InetAddress> inetAddressList) {
    printEvent("dnsEnd");
  }

  ...
}
```

We make a couple calls:

```java

        assertTrue(circuitBreaker.allowsRequests());
    }

    @Test
    @DisplayName("Test successful calls in CLOSED state")
    void testSuccessfulCalls() throws Exception {
        String result = circuitBreaker.call(() -> "success");
        assertEquals("success", result);
        assertEquals(SimpleCircuitBreaker.State.CLOSED, circuitBreaker.getState());

    body_model_name = get_body_model_name(openapi, path)

    assert app.openapi()["components"]["schemas"][body_model_name] == {
        "properties": {
            "p": {
                "items": {"type": "string"},
                "title": "P",
                "type": "array",
            },
        },
        "required": ["p"],
        "title": body_model_name,
        "type": "object",
    }