public void setChecksumPolicy(MavenExecutionOptions.ChecksumPolicy value) {
    if (value == null) return; // null may come from deserializer
    if (!Comparing.equal(this.checksumPolicy, value)) {
      this.checksumPolicy = value;
      changed();
    }
  }
public void setChecksumPolicy(MavenExecutionOptions.ChecksumPolicy value)