hpack/src/main/java/com/twitter/hpack/Encoder.java
private void clear() {
    Arrays.fill(headerFields, null);
    head.before = head.after = head;
    this.size = 0;
  }
private void clear() {
    Arrays.fill(headerFields, null);
    head.before = head.after = head;
    this.size = 0;
  }
Remove all entries from the dynamic table.