"operator": "operatorValue",
                          "values": [
                            "valuesValue"
                          ]
                        }
                      ],
                      "matchFields": [
                        {
                          "key": "keyValue",
                          "operator": "operatorValue",

                    "key": "keyValue",
                    "operator": "operatorValue",
                    "values": [
                      "valuesValue"
                    ]
                  }
                ],
                "matchFields": [
                  {
                    "key": "keyValue",
                    "operator": "operatorValue",
                    "values": [

                {
                  "key": "keyValue",
                  "operator": "operatorValue",
                  "values": [
                    "valuesValue"
                  ]
                }
              ],
              "matchFields": [
                {
                  "key": "keyValue",
                  "operator": "operatorValue",
                  "values": [

        return set1.isEmpty() && set2.isEmpty();
      }

      @Override
      public UnmodifiableIterator<E> iterator() {
        return new AbstractIterator<E>() {
          final Iterator<? extends E> itr1 = set1.iterator();
          final Iterator<? extends E> itr2 = set2.iterator();

          @Override
          @CheckForNull
          protected E computeNext() {
            if (itr1.hasNext()) {

    }
    try {
      Iterator<Integer> iterator = unmod.iterator();
      iterator.next();
      iterator.remove();
      fail("UnsupportedOperationException expected");
    } catch (UnsupportedOperationException expected) {
    }
    try {
      Iterator<Integer> iterator = unmod.descendingIterator();
      iterator.next();
      iterator.remove();

    }
    try {
      Iterator<String> iterator = values.iterator();
      iterator.next();
      iterator.remove();
      fail("UnsupportedOperationException expected");
    } catch (UnsupportedOperationException expected) {
    }

    Set<Entry<Integer, String>> entries = unmod.entrySet();
    try {
      Iterator<Entry<Integer, String>> iterator = entries.iterator();
      iterator.next();

      }

      int oldCount = values.size();
      if (occurrences >= oldCount) {
        values.clear();
      } else {
        Iterator<V> iterator = values.iterator();
        for (int i = 0; i < occurrences; i++) {
          iterator.next();
          iterator.remove();
        }
      }
      return oldCount;
    }

    @Override
    public void clear() {
      multimap.clear();

	if len(st.str) == 0 || st.str[0] != c {
		panic("internal error")
	}
	st.advance(1)
}

// A demangleErr is an error at a specific offset in the mangled
// string.
type demangleErr struct {
	err string
	off int
}

// Error implements the builtin error interface for demangleErr.
func (de demangleErr) Error() string {
	return fmt.Sprintf("%s at %d", de.err, de.off)
}

	it.startBucket = r & bucketMask(h.B)
	it.offset = uint8(r >> h.B & (abi.MapBucketCount - 1))

	// iterator state
	it.bucket = it.startBucket

	// Remember we have an iterator.
	// Can run concurrently with another mapiterinit().
	if old := h.flags; old&(iterator|oldIterator) != iterator|oldIterator {
		atomic.Or8(&h.flags, iterator|oldIterator)
	}

	mapiternext(it)
}

// mapiternext should be an internal detail,

			if utyp.fields == nil {
				check.error(e, InvalidTypeCycle, "invalid recursive type")
				goto Error
			}
			if len(e.ElemList) == 0 {
				break
			}
			// Convention for error messages on invalid struct literals:
			// we mention the struct type only if it clarifies the error
			// (e.g., a duplicate field error doesn't need the struct type).
			fields := utyp.fields