techGetTrimLayerPairs

techGetTrimLayerPairs(
d_techFileID
tx_layer 
) 
=> l_trimLayerPairs / nil

Get list of layer pairs for given layer of trim material type.

d_techFileID	The database identifier of the technology database.
tx_layer	The layer with material type `trim`.

l_trimLayerPairs	A list of layer pairs for given layer of `Trim` material type.
`nil`	The technology database does not exist or the layer is not defined in the technology database.

techGetTrimLayerPairs( tx "via1" )