added a setSilent method similar to the setEphmeral method

src/main/java/club/minnced/discord/webhook/MessageFlags.java

@@ -21,12 +21,15 @@
  */
 @SuppressWarnings("PointlessBitwiseExpression")
 public class MessageFlags {
-    public static final int CROSSPOSTED            = 1 << 0;
-    public static final int IS_CROSSPOSTED         = 1 << 1;
-    public static final int SUPPRESS_EMBEDS        = 1 << 2;
-    public static final int SOURCE_MESSAGE_DELETED = 1 << 3;
-    public static final int URGENT                 = 1 << 4;
-    public static final int HAS_THREAD             = 1 << 5;
-    public static final int EPHEMERAL              = 1 << 6;
-    public static final int LOADING                = 1 << 7;
-}
+    public static final int CROSSPOSTED                            = 1 << 0;
+    public static final int IS_CROSSPOSTED                         = 1 << 1;
+    public static final int SUPPRESS_EMBEDS                        = 1 << 2;
+    public static final int SOURCE_MESSAGE_DELETED                 = 1 << 3;
+    public static final int URGENT                                 = 1 << 4;
+    public static final int HAS_THREAD                             = 1 << 5;
+    public static final int EPHEMERAL                              = 1 << 6;
+    public static final int LOADING                                = 1 << 7;
+    public static final int FAILED_TO_MENTION_SOME_ROLES_IN_THREAD = 1 << 8;
+    public static final int SUPPRESS_NOTIFICATIONS                 = 1 << 12;
+    public static final int IS_VOICE_MESSAGE                       = 1 << 13;
+}

src/main/java/club/minnced/discord/webhook/send/WebhookMessage.java

@@ -154,6 +154,17 @@ public WebhookMessage asEphemeral(boolean ephemeral) {
         return new WebhookMessage(username, avatarUrl, content, embeds, isTTS, attachments, allowedMentions, flags, threadName);
     }
 
+    //copy the above function but change it to be for the silent flag
+    @NotNull
+    public WebhookMessage asSilent(boolean silent) {
+        int flags = this.flags;
+        if (silent)
+            flags |= MessageFlags.SUPPRESS_NOTIFICATIONS;
+        else
+            flags &= ~MessageFlags.SUPPRESS_NOTIFICATIONS;
+        return new WebhookMessage(username, avatarUrl, content, embeds, isTTS, attachments, allowedMentions, flags, threadName);
+    }
+
     /**
      * Converts a {@link club.minnced.discord.webhook.receive.ReadonlyMessage} to a
      * WebhookMessage.
@@ -176,6 +187,7 @@ public static WebhookMessage from(@NotNull ReadonlyMessage message) {
         builder.setContent(message.getContent());
         builder.setTTS(message.isTTS());
         builder.setEphemeral((message.getFlags() & MessageFlags.EPHEMERAL) != 0);
+        builder.setSilent((message.getFlags() & MessageFlags.SUPPRESS_NOTIFICATIONS) != 0);
         builder.addEmbeds(message.getEmbeds());
         return builder.build();
     }

src/main/java/club/minnced/discord/webhook/send/WebhookMessageBuilder.java

@@ -290,6 +290,23 @@ public WebhookMessageBuilder setEphemeral(boolean ephemeral) {
         return this;
     }
 
+    /**
+     * Whether the message should be silent
+     *
+     * @param silent
+     *                  True if the message should be silent, false otherwise
+     *
+     * @return This builder for chaining convenience
+     */
+    @NotNull
+    public WebhookMessageBuilder setSilent(boolean suppressNotifications) {
+        if (suppressNotifications)
+            flags |= MessageFlags.SUPPRESS_NOTIFICATIONS;
+        else
+            flags &= ~MessageFlags.SUPPRESS_NOTIFICATIONS;
+        return this;
+    }
+
     /**
      * Adds the provided file as an attachment to this message.
      * <br>A single message can have up to {@value WebhookMessage#MAX_FILES} attachments.