Add missing methods to get the actual component in HighLevelComponent…

… and LowLevelComponent

javacord-api/src/main/java/org/javacord/api/entity/message/component/HighLevelComponent.java

@@ -1,4 +1,16 @@
 package org.javacord.api.entity.message.component;
 
-public interface HighLevelComponent extends Component {
+import org.javacord.api.util.Specializable;
+import java.util.Optional;
+
+public interface HighLevelComponent extends Component, Specializable<HighLevelComponent> {
+
+    default boolean isActionRow() {
+        return getType() == ComponentType.ACTION_ROW;
+    }
+
+    default Optional<ActionRow> asActionRow() {
+        return isActionRow() ? Optional.of((ActionRow) this) : Optional.empty();
+    }
+
 }

javacord-api/src/main/java/org/javacord/api/entity/message/component/LowLevelComponent.java

@@ -1,4 +1,24 @@
 package org.javacord.api.entity.message.component;
 
-public interface LowLevelComponent extends Component {
+import org.javacord.api.util.Specializable;
+import java.util.Optional;
+
+public interface LowLevelComponent extends Component, Specializable<LowLevelComponent> {
+
+    default boolean isButton() {
+        return getType() == ComponentType.BUTTON;
+    }
+
+    default Optional<Button> asButton() {
+        return isButton() ? Optional.of((Button) this) : Optional.empty();
+    }
+
+    default boolean isSelectMenu() {
+        return getType() == ComponentType.SELECT_MENU;
+    }
+
+    default Optional<SelectMenu> asSelectMenu() {
+        return isSelectMenu() ? Optional.of((SelectMenu) this) : Optional.empty();
+    }
+
 }