wiki confusion about db_Main

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The man page doesn't give much guidance on db_Main. The wiki has
more, but I wondered about the information in the Cookbook
section under the Misc heading. It says you can get a $dbh by
calling $class->db_Main().

You have to have placed such a method in your class however for
this to work, don't you?

So I added a question at the end of the wiki page.

	 $dbh from you CDBI object

	In your script:
	  my $dbi = $class->db_Main()
	or in your class file
	  my $dbi = __PACKAGE__->db_Main()

	DrBean is confused:

	Don't you have to have written a db_Main method in your class that
	subclasses Class::DBI, as per the man page, for this to work? I don't
	think Class::DBI has a db_Main method. It only uses it if it exists.