public void setDateSeparator(String dateSeparator) {
    String trimmed = dateSeparator.trim();
    if (trimmed.length() > 1) {
      throw new IllegalArgumentException("dateSeparator must be empty or a single character");
    }
    this.dateSeparator = dateSeparator;
  }
Overrides ssl configuration relating to the Elasticsearch client connection.
zipkin-server/src/main/java/zipkin2/server/internal/elasticsearch/ZipkinElasticsearchStorageProperties.java