import ( "github.com/cloudfoundry/cli/plugin" "github.com/cloudfoundry/cli/cf/requirements" ) type myCommand struct { plugin.Plugin // ... } func (cmd *myCommand) Requirements(requirementsFactory requirements.Factory, pluginCall plugin.PluginCall) ([]requirements.Requirement, error) { reqs := []requirements.Requirement{ requirementsFactory.NewLoginRequirement(), requirementsFactory.NewTargetedOrgRequirement(), requirementsFactory.NewApplicationRequirement(cmd.appName), } return reqs, nil }In this example, the `NewApplicationRequirement` factory is used to create a new requirement that checks if an application with the name specified in `cmd.appName` exists in the targeted space. This requirement is included in a set of requirements returned by the `Requirements` method of a custom CLI command. Overall, the `github.com.cloudfoundry.cli.cf.requirements` package is part of the Cloud Foundry CLI library and provides a set of requirements that can be used to ensure that CLI commands are executed only when specific conditions are met.