code: public Setup setEnvironment(final Environment environment) {
  
          switch (environment) {
  
              case SANDBOX : this.environment = SANDBOX_URL; break;
              case PRODUCTION : this.environment = PRODUCTION_URL; break;
              case CONNECT_SANDBOX : this.environment = CONNECT_SANDBOX_URL; break;
              case CONNECT_PRODUCTION : this.environment = CONNECT_PRODUCTION_URL; break;
  
              default : this.environment = "";
          }
  
          return this;
      }
docs: This method is used to set the Moip API environment where the requests will be sent.
  The only Moip environments that are possible request are {@code SANDBOX} or {@code PRODUCTION}.
  
  @param   environment
  {@code String} the Moip API environment.
  
  @return  {@code Setup}