StorageException.ErrorCode An StorageException.ErrorCode indicates the source of a failed StorageTask or operation.

OnPausedListener<TProgress>	A listener that is called if the Task is paused via `pause()`.
OnProgressListener<TProgress>	A listener that is called periodically during execution of the `ControllableTask`.
StorageTask.ProvideError	An object that returns an exception.
StreamDownloadTask.StreamProcessor	A callback that is used to handle the stream download

CancellableTask<TState>	Represents an asynchronous operation that can be canceled.
ControllableTask<TState>	Represents an asynchronous operation that can be paused, resumed and canceled.
FileDownloadTask	A task that downloads bytes of a GCS blob to a specified File.
FileDownloadTask.TaskSnapshot	Encapsulates state about the running `FileDownloadTask`
FirebaseStorage	FirebaseStorage is a service that supports uploading and downloading large objects to Google Cloud Storage.
StorageMetadata	Metadata for a `StorageReference`.
StorageMetadata.Builder	Creates a StorageMetadata object.
StorageReference	Represents a reference to a Google Cloud Storage object.
StorageTask<TResult extends StorageTask.ProvideError>	A controllable Task that has a synchronized state machine.
StorageTask.SnapshotBase	Base class for state.
StreamDownloadTask	A task that downloads bytes of a GCS blob.
StreamDownloadTask.TaskSnapshot	Encapsulates state about the running `StreamDownloadTask`
UploadTask	An controllable task that uploads and fires events for success, progress and failure.
UploadTask.TaskSnapshot	Encapsulates state about the running `UploadTask`

StorageException Represents an Exception resulting from an operation on a StorageReference.

com.google.firebase.storage