init init_amainmethpropdef (
		n_kwredef: nullable TKwredef,
		n_block: nullable AExpr
	)
	do
		_n_kwredef = n_kwredef
		if n_kwredef != null then n_kwredef.parent = self
		_n_block = n_block
		if n_block != null then n_block.parent = self
	end