Block = "{" StatementList "}" .
StatementList = { Statement ";" } .
</pre>

<p>
In addition to explicit blocks in the source code, there are implicit blocks:
</p>

<ol>
	<li>The <i>universe block</i> encompasses all Go source text.</li>

	<li>Each <a href="#Packages">package</a> has a <i>package block</i> containing all
	    Go source text for that package.</li>

      super(delegate, predicate);
      this.inverse =
          new FilteredEntryBiMap<>(delegate.inverse(), inversePredicate(predicate), this);
    }

    private FilteredEntryBiMap(
        BiMap<K, V> delegate, Predicate<? super Entry<K, V>> predicate, BiMap<V, K> inverse) {
      super(delegate, predicate);
      this.inverse = inverse;
    }

    BiMap<K, V> unfiltered() {

      super(delegate, predicate);
      this.inverse =
          new FilteredEntryBiMap<>(delegate.inverse(), inversePredicate(predicate), this);
    }

    private FilteredEntryBiMap(
        BiMap<K, V> delegate, Predicate<? super Entry<K, V>> predicate, BiMap<V, K> inverse) {
      super(delegate, predicate);
      this.inverse = inverse;
    }

    BiMap<K, V> unfiltered() {

int64_t L2NormalizationOp::GetArithmeticCount(Operation* op) {
  int64_t count;
  // Computing the squared L2 norm is N multiply-adds so 2N ops,
  // then the single inverse-sqrt is negligible, then we multiply each
  // value by the resulting multiplier, so an extra N ops. count 3N ops.
  if (ArithmeticCountUtilHelper::GetFirstOutputCount(op, &count)) {
    return 3 * count;
  }

	/* Vector AES */
	{as: AVCIPH, a1: C_VREG, a2: C_VREG, a6: C_VREG, type_: 82, size: 4},  /* vector AES cipher, vx-form */
	{as: AVNCIPH, a1: C_VREG, a2: C_VREG, a6: C_VREG, type_: 82, size: 4}, /* vector AES inverse cipher, vx-form */
	{as: AVSBOX, a1: C_VREG, a6: C_VREG, type_: 82, size: 4},              /* vector AES subbytes, vx-form */

	/* Vector SHA */

	op_MVC     uint32 = 0xD200 // FORMAT_SS1        MOVE (character)
	op_MVCDK   uint32 = 0xE50F // FORMAT_SSE        MOVE WITH DESTINATION KEY
	op_MVCIN   uint32 = 0xE800 // FORMAT_SS1        MOVE INVERSE
	op_MVCK    uint32 = 0xD900 // FORMAT_SS4        MOVE WITH KEY
	op_MVCL    uint32 = 0x0E00 // FORMAT_RR         MOVE LONG
	op_MVCLE   uint32 = 0xA800 // FORMAT_RS1        MOVE LONG EXTENDED