/guava/android/guava/src/com/google/common/net/HostAndPort.java
StringBuilder builder = new StringBuilder( portString.startsWith( host)  + 8) ;
StringBuilder builder = new StringBuilder ( host.length ( ) + 8 ) ;
@Override public int hashCode() { return Objects.hashCode(host, port); } @Override public String toString() { <extra_id_0> if (host.indexOf(':') >= 0) { builder.append('[').append(host).append(']'); } else { builder.append(host); } if (hasPort()) {