protected var return_mtype: nullable MType = null
src/compiler/abstract_compiler.nit:2084,2--50
redef fun return_mtype
do
return called_signature.return_mtype
end
src/compiler/separate_compiler.nit:2488,2--2491,4
redef var return_mtype
src/compiler/global_compiler.nit:1063,9--30