When using a transmission with a transformation block, the transformation block is not
called when creating the presentations. The code bellow will show a list from 1 to
10 instead of one from 1 to 20:

browser := GLMTabulator new.
browser row: #row.
browser transmit 
    to: #row; 
    transformed: [ :anInt |  anInt+10 ];
    andShow: [ :aComposite :anInt |
        aComposite list
            display: [ 1 to: anInt ] ].
browser openOn: 10.

The transformation block is only called when populating the port, which happens after
the presentation was created. 

This can be fixed by modifying GLMPresentStrategy>>presentations to use the transformation,
but the the block will be called two times.