# Header 4 { #header-4 }

Link to anchor: <a href="#header-2">Header 2</a>

# Header with <a href="http://example.com">link</a> { #header-with-link }

        String rootCauseMessage = "Root cause error";
        Exception rootCause = new Exception(rootCauseMessage);

        // Create a ServletException with the root cause
        String servletErrorMessage = "Servlet error with cause";
        ServletException servletException = new ServletException(servletErrorMessage, rootCause);

        // Wrap it in ServletRuntimeException

		t.Fatalf("Failed to load with joins on, got error: %v", err)
	}

	AssertEqual(t, user1.NamedPet.Name, "joins-on_pet_1")

	onQuery2 := DB.Where(&Pet{Name: "joins-on_pet_2"})
	var user2 User
	if err := DB.Joins("NamedPet", onQuery2).Where("users.name = ?", user.Name).First(&user2).Error; err != nil {
		t.Fatalf("Failed to load with joins on, got error: %v", err)
	}

install ## ## In addition to default policies [readonly|readwrite|writeonly|consoleAdmin|diagnostics] ## you can define additional policies with custom supported actions and resources policies: [] ## writeexamplepolicy policy grants creation or deletion of buckets with name ## starting with example. In addition, grants objects write permissions on buckets starting with ## example. # - name: writeexamplepolicy # statements: # - resources: # - 'arn:aws:s3:::example*/*' # actions: # - "s3:AbortMultipartUpload"...

/*
 * Copyright 2012-2025 CodeLibs Project and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

        // Using a key with a known value for reproducibility
        SecretKeySpec key = new SecretKeySpec(new byte[16], "ARCFOUR");
        byte[] mac = PacMac.calculateMacArcfourHMACMD5(3, key, TEST_DATA);
        assertNotNull(mac);
        assertEquals(16, mac.length);

        // Test with a different key usage

        assertNull(testBlock.getAndx()); // andx should be cleared
    }

    @Test
    @DisplayName("Test all constructors with name parameter")
    void testConstructorsWithName() {
        // Test constructor with command, name, and andx
        TestAndXServerMessageBlock block1 = new TestAndXServerMessageBlock(mockConfig, (byte) 0x25, mockAndxCommand) {
            {

 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *

	buf := make([]byte, 4)
	rb.Read(buf)
	fmt.Println(string(buf))
}
```

It is possible to use an existing buffer with by replacing `New` with `NewBuffer`.


# Blocking vs Non-blocking

The default behavior of the ring buffer is non-blocking, 
meaning that reads and writes will return immediately with an error if the operation cannot be completed.
If you want to block when reading or writing, you must enable it:

```go

            builder.field("media", "test");
            builder.endObject();
            return builder;
        };

        // Test with JSON
        OutputStream jsonOutput = SearchEngineUtil.getXContentBuilderOutputStream(callback, XContentType.JSON);
        assertNotNull(jsonOutput);

        // Test with YAML
        OutputStream yamlOutput = SearchEngineUtil.getXContentBuilderOutputStream(callback, XContentType.YAML);