`DebugConfigurationProvider.provideDebugConfigurations` is called to provide the initial debug configurations for a newly created launch.json.
DebugConfigurationProvider.provideDebugConfigurations is called to provide dynamically generated debug configurations when the user asks for them through the UI (e.g. via the "Select and Start Debugging" command).
A DebugConfigurationProviderTriggerKind specifies when the
provideDebugConfigurationsmethod of aDebugConfigurationProvideris triggered. Currently there are two situations: to provide the initial debug configurations for a newly created launch.json or to provide dynamically generated debug configurations when the user asks for them through the UI (e.g. via the "Select and Start Debugging" command). A trigger kind is used when registering aDebugConfigurationProviderwith debug.registerDebugConfigurationProvider.