New implementations of interfaces.

Change-Id: I1f8733e50162feaa943ac6cf77be76d4480acf0d
diff --git a/java/gov/nist/javax/sip/header/extensions/ReferredByHeader.java b/java/gov/nist/javax/sip/header/extensions/ReferredByHeader.java
new file mode 100644
index 0000000..ef7477f
--- /dev/null
+++ b/java/gov/nist/javax/sip/header/extensions/ReferredByHeader.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package gov.nist.javax.sip.header.extensions;
+
+import javax.sip.header.Header;
+import javax.sip.header.HeaderAddress;
+import javax.sip.header.Parameters;
+
+public interface ReferredByHeader extends Header, HeaderAddress, Parameters {
+
+    String NAME = "Referred-By";
+}
diff --git a/java/gov/nist/javax/sip/header/extensions/ReplacesHeader.java b/java/gov/nist/javax/sip/header/extensions/ReplacesHeader.java
new file mode 100644
index 0000000..305bc7a
--- /dev/null
+++ b/java/gov/nist/javax/sip/header/extensions/ReplacesHeader.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package gov.nist.javax.sip.header.extensions;
+
+import java.text.ParseException;
+import javax.sip.header.Header;
+import javax.sip.header.Parameters;
+
+public interface ReplacesHeader extends Header, Parameters {
+
+    String NAME = "Replaces";
+    String getToTag();
+    void setToTag(String tag) throws ParseException;
+    String getFromTag();
+    void setFromTag(String tag) throws ParseException;
+    String getCallId();
+    void setCallId(String callId) throws ParseException;
+}
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