Method addFormat

src/main/java/com/rtg/vcf/VcfRecord.java:470–473

Adds a format key without setting any sample values. @param key format value to be set @return this, for call chaining

(String key)

   * @return this, for call chaining
   */
  public VcfRecord addFormat(String key) {
    addOrGetFormat(key);
    return this;
  }

  // Ensures that GT is first
  private List<String> addOrGetFormat(String key) {