Method GetOpaque

common/value.h:1817–1817

  const OpaqueValue& GetOpaque() const& ABSL_ATTRIBUTE_LIFETIME_BOUND;
  OpaqueValue GetOpaque() &&;
  OpaqueValue GetOpaque() const&& { return GetOpaque(); }

  // Performs an unchecked cast from a value to an optional value. In
  // debug builds a best effort is made to crash. If `IsOptional()` would return