// See if the given commandLine starts with a valid environment name. If so,
// extract the environment name from the front and return the remainder of the
// commandline.
private (string startingEnvironment, string commandLine) GetStartingEnvironment(string commandLine)
{
var validEnvironments = Environments.GetNames();
if (validEnvironments.Count <= 1)
{
return(null, commandLine);
}
var parts = commandLine.Split(new[] { ' ' }, 2);
var env = parts[0];
return(Environments.IsValid(env) ? (env, parts[1]) : (null, commandLine));
