code: public long getValuesOrThrow(
        java.lang.String key) {
      if (key == null) { throw new java.lang.NullPointerException(); }
      java.util.Map<java.lang.String, java.lang.Long> map =
          internalGetValues().getMap();
      if (!map.containsKey(key)) {
        throw new java.lang.IllegalArgumentException();
      }
      return map.get(key);
    }
docs: <pre>
  Tiered limit values. You must specify this as a key:value pair, with an
  integer value that is the maximum number of requests allowed for the
  specified unit. Currently only STANDARD is supported.
  </pre>
  
  <code>map&lt;string, int64&gt; values = 10;</code>