Check package health

def command_health(self):
        """Check package health
        """
        if len(self.args) == 1 and self.args[0] == "health":
            PackageHealth(mode="").test()
        elif (len(self.args) == 2 and self.args[0] == "health" and
                self.args[1] == "--silent"):
            PackageHealth(mode=self.args[1]).test()
        else:
            usage("")