Insert a basic equals method into your class

equals.template

${:import(java.util.Objects)}
@Override
public boolean equals(Object obj) {
  if (obj == null) {
    return false;
  }
  if (!(obj instanceof ${enclosing_type})) {
    return false;
  }
  ${enclosing_type} other = (${enclosing_type}) obj;
  return Objects.equals(${var}, other.${var});
}