This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 123]

ACL	Access control list for object storage
Bootstrap	Bootstrapping services
CDN	Provides CDN services for ObjectStorage
Container	A container in an ObjectStorage
DBaaS	Database As A Service
Exception	The top-level HPCloud exception
ContentVerificationException	Content Verification error condition
ReadOnlyObjectException	Thrown if an object that is read only is modified
AuthorizationException	Thrown when an access constraint is not met
ForbiddenException	Thrown when an access constraint is not met
UnauthorizedException	Thrown when authorization fails
ConflictException	Represents an HTTP 409 error
FileNotFoundException	Represents an HTTP File Not Found error
LengthRequiredException	Represents an HTTP 412 error
LockedException	Represents an HTTP 423 Locked error
MethodNotAllowedException	Represents an HTTP 405 error
ServerException	Represents an HTTP 500 error
ContainerNotEmptyException	Indicatest that a container is not empty
UnprocessableEntityException	Represents an HTTP 422 error
FlavorDetails	Class for working with Database Flavors Details
IdentityServices	IdentityServices provides authentication and authorization
InstanceDetails
Object	An object for ObjectStorage
RemoteObject	A representation of an object stored in remote Object Storage
ObjectStorage	Access to ObjectStorage (Swift)
Operations	Abstract class for DBaaS Operations groups
Flavor	Class for working with Database Flavors
Instance
Snapshot	Manage snapshots
Response	A Transport response
SnapshotDetails	Details about a DBaaS snapshot
StreamWrapper	Provides stream wrapping for Swift
StreamWrapperFS	Provides stream wrapping for Swift like a file system
Subdir	Represent a subdirectory (subdir) entry
Transport	Provide an HTTP client (Transporter) for interaction with HPCloud
Transporter	Describes a Transporter
CURLTransport	Provide HTTP transport with CURL
PHPStreamTransport	Provide HTTP transport with the PHP HTTP stream wrapper