@Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    MockMakerId that = (MockMakerId) o;
    return Objects.equals(id, that.id);
  }
Represents the ID of an {@link IMockMaker}.

@since 2.4
spock-core/src/main/java/spock/mock/MockMakerId.java