apollo-client-config-data/src/main/java/com/ctrip/framework/apollo/config/data/importer/ApolloConfigDataResource.java/ApolloConfigDataResource/equals
class ApolloConfigDataResource:  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    ApolloConfigDataResource that = (ApolloConfigDataResource) o;
    return Objects.equals(namespace, that.namespace);
  }