AllVersions returns a slice of all available versions for the tool managed by the given plugin by invoking the plugin's list-all callback.

AllVersionsFiltered returns a list of existing versions that match a regex query provided by the user.

Install installs all specified versions of a tool for the current directory.

InstallAll installs all specified versions of every tool for the current directory.

InstallOneVersion installs a specific version of a specific tool.

InstallVersion installs a version of a specific tool, the version may be an exact version, or it may be `latest` or `latest` a regex query in order to select the latest version matching the provided pattern.

Latest invokes the plugin's latest-stable callback if it exists and returns the version it returns.

Uninstall uninstalls a specific tool version.

NoVersionSetError is returned whenever an operation that requires a version is not able to resolve one.

UninstallableVersionError is an error returned if someone tries to install the system version.

VersionAlreadyInstalledError is returned whenever a version is already installed.