# Find the MEntity ` with `full_name`.
	fun find_mentity(full_name: nullable String): nullable MEntity do
		if full_name == null then return null
		var mentity = config.model.mentity_by_full_name(full_name.from_percent_encoding, config.filter)
		if mentity == null then return null

		var filter = config.filter
		if filter == null or filter.accept_mentity(mentity) then return mentity
		return null
	end