@Override public void addParameterDefinition( String key, String defValue, String description ) throws DuplicateParamException { if ( params.get( key ) == null ) { OneNamedParam oneParam = new OneNamedParam(); oneParam.key = key; oneParam.defaultValue = defValue; oneParam.description = description; oneParam.value = ""; params.put( key, oneParam ); } else { throw new DuplicateParamException( "Duplicate parameter '" + key + "' detected." ); } }