@Override
        public int hashCode() {
            final int prime = 31;
            int result = 1;
            result = prime * result + ((this.local == null) ? 0 : this.local.hashCode());
            result = prime * result + ((this.remote == null) ? 0 : this.remote.hashCode());
            return result;
        }
A peer pair
@author boyan(boyan@antfin.com)
jraft-core/src/main/java/com/alipay/sofa/jraft/rpc/impl/core/AppendEntriesRequestProcessor.java