Update docs for setUiTtyMode and using Message across IPC

Bug: 77870347
Test: Manual
Change-Id: I9d3abff727e57dacab2e339a094545de9c46ed68
diff --git a/src/java/com/android/ims/ImsManager.java b/src/java/com/android/ims/ImsManager.java
index e7a857d..1502089 100644
--- a/src/java/com/android/ims/ImsManager.java
+++ b/src/java/com/android/ims/ImsManager.java
@@ -1894,6 +1894,15 @@
     /**
      * Sets the UI TTY mode. This is the preferred TTY mode that the user sets in the call
      * settings screen.
+     * @param uiTtyMode TTY Mode, valid options are:
+     *         - {@link com.android.internal.telephony.Phone#TTY_MODE_OFF}
+     *         - {@link com.android.internal.telephony.Phone#TTY_MODE_FULL}
+     *         - {@link com.android.internal.telephony.Phone#TTY_MODE_HCO}
+     *         - {@link com.android.internal.telephony.Phone#TTY_MODE_VCO}
+     * @param onComplete A Message that will be called by the ImsService when it has completed this
+     *           operation or null if not waiting for an async response. The Message must contain a
+     *           valid {@link Message#replyTo} {@link android.os.Messenger}, since it will be passed
+     *           through Binder to another process.
      */
     public void setUiTTYMode(Context context, int uiTtyMode, Message onComplete)
             throws ImsException {