- **Memory efficient** - Specialized collections like `LruHashMap` and `ArrayMap` for memory-conscious applications
- **Java 21 features** - Switch expressions and pattern matching for reduced overhead

## 🧪 Building and Testing

### Development Setup
```bash
# Clone the repository
git clone https://github.com/codelibs/corelib.git
cd corelib

# Compile the project
mvn clean compile

# Run all tests
mvn test

        helper.delayByRules();
        end = System.currentTimeMillis();
        assertTrue(end - start < 50); // Should return quickly

        // Test with rule that has delay (we'll use a very short delay for testing)
        helper.ruleList.clear();
        helper.addIntervalRule("12:00", "13:00", "*", 10);
        start = System.currentTimeMillis();
        helper.delayByRules();
        end = System.currentTimeMillis();

        assertNull(sambaHelper.getAccountId(createMockSID(7, "Invalid Account")));
    }

    public void test_getAccountId_smb1_basic() throws SmbException {
        // Note: SMB1 SID testing is limited due to interface constraints
        // This test verifies the method exists and handles the SMB1 SID parameter type
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override

     */
    public void test_searchOptionsMenuLabels() {
        assertEquals("{labels.searchoptions_menu_labels}", FessLabels.LABELS_searchoptions_menu_labels);
    }

    /**
     * Interface for testing protected methods
     */
    private interface FessLabelsTestAccessor {
        void testAssertPropertyNotNull(String property);
    }

        FessUserBean emptyBean = FessUserBean.empty();
        assertTrue(emptyBean instanceof java.io.Serializable);
    }

    // Test implementation of FessUser interface for testing
    private static class TestFessUser implements FessUser {
        private static final long serialVersionUID = 1L;
        private String name;
        private String[] roleNames = new String[0];

import mockwebserver3.MockResponse
import mockwebserver3.MockWebServer
import mockwebserver3.junit5.StartStop
import okhttp3.internal.platform.Platform.Companion.get
import okhttp3.internal.proxy.NullProxySelector
import okhttp3.testing.PlatformRule
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.assertNotSame
import org.junit.jupiter.api.Assertions.assertSame

import okhttp3.WebSocketListener
import okhttp3.internal.UnreadableResponseBody
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.ws.WebSocketProtocol.acceptHeader
import okhttp3.testing.Flaky
import okhttp3.testing.PlatformRule
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.decodeHex
import okio.ByteString.Companion.encodeUtf8
import org.junit.jupiter.api.AfterEach

    return getIntProperty(RDMA_CREDITS, 255);
}

private boolean isRdmaAvailable() {
    return new DisniRdmaProvider().isAvailable() || 
           new JxioRdmaProvider().isAvailable();
}
```

## 7. Testing Strategy

### 7.1 Unit Tests
```java
@Test
public void testRdmaProviderSelection() {
    RdmaProvider provider = RdmaProviderFactory.createProvider("auto");
    assertNotNull(provider);

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.Converter;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.testing.Helpers;
import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.Converter;
import com.google.common.collect.testing.Helpers;
import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;