This makes sure all the managed subprocesses are killed and properly logged.

Creates a new plugin client which manages the lifecycle of an external plugin and gets the address for the RPC connection.

Server waits for a connection to this plugin and returns a Packer RPC server that you can use to register components and serve them.

The APIVersion is outputted along with the RPC address.

This is a count of the number of interrupts the process has received.

If this is true, then the "unexpected EOF" panic will not be raised throughout the clients.

Client handles the lifecycle of a plugin application, determining its RPC address, and returning various types of packer interface implementations across the multi-process communication layer.

ClientConfig is the configuration used to initialize a new plugin client.