}
  }

  private static class Request {
    final String methodName;
    final Object[] arguments;

    Request(String methodName, Object[] arguments) {
      this.methodName = checkNotNull(methodName);
      this.arguments = checkNotNull(arguments);
    }
  }

  private static class Response {
    final String methodName;
    final Object result;
    final Throwable throwable;

     */
    public MethodNotFoundRuntimeException(final Class<?> targetClass, final String methodName, final Class<?>[] methodArgClasses) {
        super("ECL0049", asArray(targetClass.getName(), MethodUtil.getSignature(methodName, methodArgClasses)));
        this.targetClass = targetClass;
        this.methodName = methodName;
        this.methodArgClasses = methodArgClasses;
    }

    /**

     */
    public NoSuchMethodRuntimeException(final Class<?> targetClass, final String methodName, final Class<?>[] argTypes,
            final Throwable cause) {
        super("ECL0057", asArray(targetClass.getName(), MethodUtil.getSignature(methodName, argTypes)), cause);
        this.targetClass = targetClass;
        this.methodName = methodName;
        this.argTypes = argTypes;
    }

    /**
     * Returns the target class.
     *

     * The name of the method.
     */
    private final String methodName;

    /**
     * Creates a {@link MethodNotStaticRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param methodName
     *            Method name
     */
    public MethodNotStaticRuntimeException(final Class<?> targetClass, final String methodName) {
        super("ECL0100", asArray(targetClass.getName(), methodName));

     *
     * @param methodName
     *            The method name. Must not be {@literal null} or empty string
     * @return Whether the {@link MethodDesc} exists
     */
    boolean hasMethodDesc(String methodName);

    /**
     * Returns an array of {@link MethodDesc}.
     *
     * @param methodName
     *            The method name. Must not be {@literal null} or empty string
     * @return An array of {@link MethodDesc}

     *
     * @param methodName
     *            The method name. Cannot be {@literal null} or empty
     * @param argTypes
     *            The argument types
     * @return The string representation of the method signature
     */
    public static String getSignature(final String methodName, final Class<?>... argTypes) {
        assertArgumentNotEmpty("methodName", methodName);

    protected final BeanDesc beanDesc;

    /** The method */
    protected final Method method;

    /** The method name */
    protected final String methodName;

    /** Array of method parameter types */
    protected final Class<?>[] parameterTypes;

    /** The return type of the method */
    protected final Class<?> returnType;

    return Collections.singletonList(getMethod("testInverseSerialization"));
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  private static Method getMethod(String methodName) {
    return Helpers.getMethod(BiMapInverseTester.class, methodName);
  }

└── CoreLibConstants.java
src/test/java/   # Test classes (mirrors main structure)
```

## Development Commands

```bash
mvn test                              # Run tests
mvn test -Dtest=ClassName#methodName  # Run specific test
mvn clean package                     # Build
mvn install                           # Install to local Maven repo
mvn formatter:format                  # Format code

    for (String methodName : STATIC_ONE_ARG_METHODS_SHOULD_PASS) {
      Method method = OneArg.class.getMethod(methodName, String.class);
      try {
        new NullPointerTester().testMethodParameter(new OneArg(), method, 0);
      } catch (AssertionError unexpected) {
        throw new AssertionError("Should not have flagged method " + methodName, unexpected);
      }
    }
  }