@Override
  public FormattedCharacterBuffer getHeader(int columnIndex) {
    // Does not need to return anything - no header row required.
    return null;
  }
The code display is a large array of rows to be displayed. Each row is an array of fields of
length "Columns". Each field is an array of lines.
java/zylib/src/main/java/com/google/security/zynamics/zylib/gui/CodeDisplay/CodeDisplayModelExample.java