Enabled returns enabled components that implement a particular interface.

GetBool returns a bool for the named option of the calling package's component.

GetInt returns an integer for the named option of the calling package's component.

GetString returns a string for the named option of the calling package's component.

Option is used to create values used by Register to define configuration for a component.

Register adds a component object to the registry as the specified name.

Select returns a component registered with the specified name.

SetConfig lets you specify the ConfigProvider to use.

ConfigProvider is the interface expected by SetConfig and is used to look up configuration.

Context interface for dynamically enabled components.