core/play-guice/src/main/java/play/inject/guice/GuiceBuilder.java
public final Self configure(Map<String, Object> conf) {
    return configure(ConfigFactory.parseMap(conf));
  }
public final Self configure(Map<String, Object> conf) {
    return configure(ConfigFactory.parseMap(conf));
  }
Add additional configuration.

@param conf the configuration to add
@return a copy of this builder configured with the supplied configuration