def self.from(name_with_owner : String)
        case name_with_owner.split('/')
        when {host, owner, name} then self.new(host, name, owner)
        when {owner, name} then self.new("github.com", owner, name)
        when {name} then self.new("github.com", name, name)
        else self.new("a", "b", "c")
        end
      end