Analyser: use the generator for unit-related messages that require mentioning an expression/equation.
Analyser: use the generator for unit-related messages that require mentioning an expression/equation.

hsorby/libcellml,nickerso/libcellml,hsorby/libcellml,cellml/libcellml,cellml/libcellml,hsorby/libcellml,nickerso/libcellml,cellml/libcellml,nickerso/libcellml,hsorby/libcellml,cellml/libcellml,nickerso/libcellml