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diff --git a/Firebase/Storage/Public/FIRStorageTask.h b/Firebase/Storage/Public/FIRStorageTask.h
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+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "FIRStorageConstants.h"
+#import "FIRStorageMetadata.h"
+#import "FIRStorageSwiftNameSupport.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * A superclass to all FIRStorage*Tasks, including FIRStorageUploadTask
+ * and FIRStorageDownloadTask, to provide state transitions, event raising, and common storage
+ * or metadata and errors.
+ * Callbacks are always fired on the developer specified callback queue.
+ * If no queue is specified by the developer, it defaults to the main queue.
+ * Currently not thread safe, so only call methods on the main thread.
+ */
+FIR_SWIFT_NAME(StorageTask)
+@interface FIRStorageTask : NSObject
+
+/**
+ * An immutable view of the task and associated metadata, progress, error, etc.
+ */
+@property(strong, readonly, nonatomic, nonnull) FIRStorageTaskSnapshot *snapshot;
+
+@end
+
+/**
+ * Defines task operations such as pause, resume, cancel, and enqueue for all tasks.
+ * All tasks are required to implement enqueue, which begins the task, and may optionally
+ * implement pause, resume, and cancel, which operate on the task to pause, resume, and cancel
+ * operations.
+ */
+FIR_SWIFT_NAME(StorageTaskManagement)
+@protocol FIRStorageTaskManagement<NSObject>
+
+@required
+/**
+ * Prepares a task and begins execution.
+ */
+- (void)enqueue;
+
+@optional
+/**
+ * Pauses a task currently in progress.
+ */
+- (void)pause;
+
+/**
+ * Cancels a task currently in progress.
+ */
+- (void)cancel;
+
+/**
+ * Resumes a task that is paused.
+ */
+- (void)resume;
+
+@end
+
+NS_ASSUME_NONNULL_END