attributes; public Map getAttributes () { if (attributes == null) { attributes = new LinkedHashMap (); } return attributes; } public void setAttributes (Map attributes) { this.attributes = attributes; } private Date effectiveDate; public Date getEffectiveDate () { return effectiveDate; } public void setEffectiveDate (Date effectiveDate) { this.effectiveDate = effectiveDate; } private Date expirationDate; public Date getExpirationDate () { return expirationDate; } public void setExpirationDate (Date expirationDate) { this.expirationDate = expirationDate; } ]]>