.append(this.getStem_id()     , otherStem.getStem_id()    )
.append(this.getOwner_uuid()  , otherStem.getOwner_uuid() )
  public boolean equals(Object other) {    if (this == other) {      return true;    }    if (!(other instanceof Stem)) {      return false;    }    Stem otherStem = (Stem) other;    return new EqualsBuilder()      .append(this.getStem_id()     , otherStem.getStem_id()    )      .append(this.getCreator_id()  , otherStem.getCreator_id() )      .append(this.getStem_id()     , otherStem.getStem_id()    )      .isEquals();  } // public boolean equals(other)