feat: Removes Optional / StringUtil

Author: kworkbee

spring-cloud-loadbalancer/src/main/java/org/springframework/cloud/loadbalancer/config/LoadBalancerAutoConfiguration.java

@@ -18,9 +18,6 @@
 
 import java.util.Collections;
 import java.util.List;
-import java.util.Optional;
-
-import io.netty.util.internal.StringUtil;
 
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.autoconfigure.AutoConfigureBefore;
@@ -48,9 +45,9 @@
  */
 @Configuration(proxyBeanMethods = false)
 @LoadBalancerClients
-@EnableConfigurationProperties({ LoadBalancerClientsProperties.class, LoadBalancerEagerLoadProperties.class })
-@AutoConfigureBefore({ ReactorLoadBalancerClientAutoConfiguration.class,
-		LoadBalancerBeanPostProcessorAutoConfiguration.class })
+@EnableConfigurationProperties({LoadBalancerClientsProperties.class, LoadBalancerEagerLoadProperties.class})
+@AutoConfigureBefore({ReactorLoadBalancerClientAutoConfiguration.class,
+		LoadBalancerBeanPostProcessorAutoConfiguration.class})
 @ConditionalOnProperty(value = "spring.cloud.loadbalancer.enabled", havingValue = "true", matchIfMissing = true)
 public class LoadBalancerAutoConfiguration {
 
@@ -60,8 +57,8 @@ public class LoadBalancerAutoConfiguration {
 	@ConditionalOnMissingBean
 	public LoadBalancerZoneConfig zoneConfig(Environment environment) {
 		return new LoadBalancerZoneConfig(environment.getProperty("spring.cloud.loadbalancer.zone"),
-				List.of(Optional.ofNullable(environment.getProperty("spring.cloud.loadbalancer.secondary-zones"))
-						.orElse(StringUtil.EMPTY_STRING).split(ZONE_SPLITTER_COMMA)));
+				List.of(environment.getProperty("spring.cloud.loadbalancer.secondary-zones", "")
+						.split(ZONE_SPLITTER_COMMA)));
 	}
 
 	@ConditionalOnMissingBean