public Evidence setDate(Date value) { 
      if (value == null)
        this.date = null;
      else {
        if (this.date == null)
          this.date = new DateTimeType();
        this.date.setValue(value);
      }
      return this;
    }
public Evidence setDate ( Date value ) { if ( value == null ) this . date = null ; else { if ( this . date == null ) this . date = new DateTimeType ( ) ; this . date . setValue ( value ) ; } return this ; }
@param value The date  (and optionally time) when the evidence was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the evidence changes.