Added javadoc to apn retry \ throttling related methods

Bug: 175092152
Test: N/A
Merged-In: I35a3b97f3e52eef68310a92178bb14495641c6e7
Change-Id: I35a3b97f3e52eef68310a92178bb14495641c6e7

2 files changed, 11 insertions, 4 deletions

diff --git a/telephony/java/android/telephony/data/DataCallResponse.java b/telephony/java/android/telephony/data/DataCallResponse.java
index 46ec4a39fd21..46940dc6a0a5 100644
--- a/telephony/java/android/telephony/data/DataCallResponse.java
+++ b/telephony/java/android/telephony/data/DataCallResponse.java
@@ -22,6 +22,7 @@ import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.net.LinkAddress;
+import android.net.LinkProperties;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.telephony.Annotation.DataFailureCause;
@@ -274,9 +275,11 @@ public final class DataCallResponse implements Parcelable {
     }
 
     /**
-     * @return The network suggested data retry duration in milliseconds. {@code Long.MAX_VALUE}
-     * indicates data retry should not occur. {@link #RETRY_DURATION_UNDEFINED} indicates network
-     * did not suggest any retry duration.
+     * @return The network suggested data retry duration in milliseconds as specified in
+     * 3GPP TS 24.302 section 8.2.9.1.  The APN associated to this data call will be throttled for
+     * the specified duration unless {@link DataServiceCallback#onApnUnthrottled} is called.
+     * {@code Long.MAX_VALUE} indicates data retry should not occur.
+     * {@link #RETRY_DURATION_UNDEFINED} indicates network did not suggest any retry duration.
      */
     public long getRetryDurationMillis() {
         return mSuggestedRetryTime;
diff --git a/telephony/java/android/telephony/data/DataServiceCallback.java b/telephony/java/android/telephony/data/DataServiceCallback.java
index 52bf15fd16c3..f56c19b78a16 100644
--- a/telephony/java/android/telephony/data/DataServiceCallback.java
+++ b/telephony/java/android/telephony/data/DataServiceCallback.java
@@ -250,7 +250,11 @@ public class DataServiceCallback {
     }
 
     /**
-     * Indicates that the specified APN is no longer throttled.
+     * The APN is throttled for the duration specified in
+     * {@link DataCallResponse#getRetryDurationMillis}.  Calling this method unthrottles that
+     * APN.
+     * <p/>
+     * see: {@link DataCallResponse#getRetryDurationMillis}
      *
      * @param apn Access Point Name defined by the carrier.
      */