testing of references for isnull rather than ==null
Check for isnull
Added methods to get weight proeprties
isnmull instead of == null
get weight property methods
fixed issue with claiming missing conneciton instance by calling on
gtAll rather than getcontaining conencito0n isntances.
added method to test for unresolved
testing for isnull instead of ==nuill
Check for different property values for same conneciton isntance does
not work and gives false message. Commented out the error reporting
until fixed.