public String toHELM2() {
    if (isAnnotationTrue()) {
      return sourceId.getId() + "," + targetId.getId() + "," + sourceUnit + ":"
          + rGroupSource + "-" + targetUnit + ":" + rGroupTarget + "\"" + annotation + "\"";
    } else {
      return sourceId.getId() + "," + targetId.getId() + "," + sourceUnit + ":"
          + rGroupSource + "-" + targetUnit + ":" + rGroupTarget;
    }
  }
public String toHELM2() {
    if (isAnnotationTrue()) {
      return sourceId.getId() + "," + targetId.getId() + "," + sourceUnit + ":"
          + rGroupSource + "-" + targetUnit + ":" + rGroupTarget + "\"" + annotation + "\"";
    } else {
      return sourceId.getId() + "," + targetId.getId() + "," + sourceUnit + ":"
          + rGroupSource + "-" + targetUnit + ":" + rGroupTarget;
    }
  }
public String toHELM2 ( ) { if ( isAnnotationTrue ( ) ) { return sourceId . getId ( ) + "," + targetId . getId ( ) + "," + sourceUnit + ":" + rGroupSource + "-" + targetUnit + ":" + rGroupTarget + "\"" + annotation + "\"" ; } else { return sourceId . getId ( ) + "," + targetId . getId ( ) + "," + sourceUnit + ":" + rGroupSource + "-" + targetUnit + ":" + rGroupTarget ; } }
method to get a valid HELM2 of the connection notation

@return valid HELM2
method to get a valid HELM2 of the connection notation