The classdef that introduce the property

While a property is not bound to a specific module, or class, the introducing mclassdef is used for naming and visibility

Property definitions

nitc $ MProperty :: intro_mclassdef
	# The classdef that introduce the property
	# While a property is not bound to a specific module, or class,
	# the introducing mclassdef is used for naming and visibility
	var intro_mclassdef: MClassDef
src/model/model.nit:2149,2--2152,31