dblook and optional tools

[Katherine Marsden]

I notice the dblook output after registering the databaseMetaData tool 
has the many new functions, e.g.

CREATE FUNCTION "APP"."GETCATALOGS" () RETURNS TABLE ( "TABLE_CAT" 
CHAR(128) ) LANGUAGE JAVA PARAMETER STYLE DERBY_JDBC_RESULT_SET READS 
SQL DATA CALLED ON NULL INPUT EXTERNAL NAME 
'org.apache.derby.impl.tools.optional.DBMDWrapper.getCatalogs' ;

CREATE FUNCTION "APP"."GETCATALOGSEPARATOR" () RETURNS VARCHAR(32672) 
LANGUAGE JAVA PARAMETER STYLE JAVA READS SQL DATA CALLED ON NULL INPUT 
EXTERNAL NAME 
'org.apache.derby.impl.tools.optional.DBMDWrapper.getCatalogSeparator' ;

but nothing for the registering of the tool itself. Is the tool 
registration just a shortcut for creating the functions or is there 
anything else done that needs to be reflected in dblook?