feat: add patch operation support

src/main/java/com/twilio/base/Patcher.java

@@ -0,0 +1,50 @@
+package com.twilio.base;
+
+import com.twilio.Twilio;
+import com.twilio.http.TwilioRestClient;
+
+import java.util.concurrent.CompletableFuture;
+
+/**
+ * Executor for updates of a resource.
+ *
+ * @param <T> type of the resource
+ */
+public abstract class Patcher<T extends Resource> {
+
+    /**
+     * Execute an async request using default client.
+     *
+     * @return future that resolves to requested object
+     */
+    public CompletableFuture<T> patchAsync() {
+        return patchAsync(Twilio.getRestClient());
+    }
+
+    /**
+     * Execute an async request using specified client.
+     *
+     * @param client client used to make request
+     * @return future that resolves to requested object
+     */
+    public CompletableFuture<T> patchAsync(final TwilioRestClient client) {
+        return CompletableFuture.supplyAsync(() -> patch(client), Twilio.getExecutorService());
+    }
+
+    /**
+     * Execute a request using default client.
+     *
+     * @return Requested object
+     */
+    public T patch() {
+        return patch(Twilio.getRestClient());
+    }
+
+    /**
+     * Execute a request using specified client.
+     *
+     * @param client client used to make request
+     * @return Requested object
+     */
+    public abstract T patch(final TwilioRestClient client);
+}