`DefaultClientResources.dnsResolver(DnsResolver resolver)` should be marked as deprecated.

[Wang Zhi]

Just like definitions at its interface:

lettuce/src/main/java/io/lettuce/core/resource/ClientResources.java

Lines 164 to 175 in cc9d240

  
         /** 
          * Sets the {@link DnsResolver} that is used to resolve hostnames to {@link java.net.InetAddress}. Defaults to 
          * {@link DnsResolvers#UNRESOLVED} to use netty's {@link AddressResolverGroup}. 
          * 
          * @param dnsResolver the DNS resolver, must not be {@code null}. 
          * @return {@code this} {@link Builder}. 
          * @since 4.3 
          * @deprecated since 6.1. Configure {@link AddressResolverGroup} instead. 
          */ 
         @Deprecated 
         Builder dnsResolver(DnsResolver dnsResolver); 

The implementation method should be marked as deprecated to inform users to use the new settings.

lettuce/src/main/java/io/lettuce/core/resource/DefaultClientResources.java

Line 452 in cc9d240

 public Builder dnsResolver(DnsResolver dnsResolver) {