Add CLSCompliance.
diff --git a/src/ProtocolBuffers/UnknownField.cs b/src/ProtocolBuffers/UnknownField.cs
index 1873e30..62b96fe 100644
--- a/src/ProtocolBuffers/UnknownField.cs
+++ b/src/ProtocolBuffers/UnknownField.cs
@@ -29,6 +29,7 @@
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using Google.ProtocolBuffers.Collections;
@@ -292,6 +293,7 @@
/// <summary>
/// Adds a varint value.
/// </summary>
+ [CLSCompliant(false)]
public Builder AddVarint(ulong value) {
varintList = Add(varintList, value);
return this;
@@ -300,6 +302,7 @@
/// <summary>
/// Adds a fixed32 value.
/// </summary>
+ [CLSCompliant(false)]
public Builder AddFixed32(uint value) {
fixed32List = Add(fixed32List, value);
return this;
@@ -308,6 +311,7 @@
/// <summary>
/// Adds a fixed64 value.
/// </summary>
+ [CLSCompliant(false)]
public Builder AddFixed64(ulong value) {
fixed64List = Add(fixed64List, value);
return this;