in lib/google/serverless/exec.rb [572:583]
def resolve_strategy app_env
@strategy = @strategy.to_s.downcase
if @strategy.empty?
@strategy = app_env == "flexible" ? "cloud_build" : "deployment"
end
if app_env == "standard" && @strategy == "cloud_build" ||
@strategy != "cloud_build" && @strategy != "deployment"
raise UnsupportedStrategy.new @strategy, app_env
end
@strategy
end