# Package-level declarations

Build lifecycle interfaces and classes related to event notifications.

## Types

BuildPhaseFinishEvent
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@Incubating
interface BuildPhaseFinishEvent : BuildPhaseProgressEvent, FinishEvent
An event that marks the finish of a build phase.
BuildPhaseOperationDescriptor
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@Incubating
interface BuildPhaseOperationDescriptor : OperationDescriptor
A descriptor of a build phase operation.
BuildPhaseProgressEvent
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@Incubating
interface BuildPhaseProgressEvent : ProgressEvent
Event describing the build phase.
BuildPhaseStartEvent
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@Incubating
interface BuildPhaseStartEvent : BuildPhaseProgressEvent, StartEvent
An event that marks the start of a build phase.