}
    // Using buildKeepingLast() so as not to fail on duplicate keys
    return builder.buildKeepingLast();
  }

  /**
   * Returns a map with the given {@code values}, indexed by keys derived from those values. In
   * other words, each input value produces an entry in the map whose key is the result of applying

    }
    // Using buildKeepingLast() so as not to fail on duplicate keys
    return builder.buildKeepingLast();
  }

  /**
   * Returns a map with the given {@code values}, indexed by keys derived from those values. In
   * other words, each input value produces an entry in the map whose key is the result of applying

	Bad2
}
type Bad2 interface {
	Bad1
}
</pre>

<h3 id="Map_types">Map types</h3>

<p>
A map is an unordered group of elements of one type, called the
element type, indexed by a set of unique <i>keys</i> of another type,
called the key type.
The value of an uninitialized map is <code>nil</code>.
</p>

<pre class="ebnf">
MapType     = "map" "[" KeyType "]" ElementType .

ls
ac.ls
biz.ls
co.ls
edu.ls
gov.ls
info.ls
net.ls
org.ls
sc.ls

// lt : https://en.wikipedia.org/wiki/.lt
lt
// gov.lt : http://www.gov.lt/index_en.php
gov.lt

// lu : http://www.dns.lu/en/
lu

// lv : http://www.nic.lv/DNS/En/generic.php
lv
com.lv
edu.lv
gov.lv
org.lv
mil.lv
id.lv
net.lv
asn.lv