def METHOD_NAME(self, context):
    self.width = 150
    self.inputs.new('SvStringsSocket', "val").prop_name = 'range_val'
    self.inputs.new('SvStringsSocket', "b1").prop_name = 'range_b1'
    self.inputs.new('SvStringsSocket', "b2").prop_name = 'range_b2'
    self.outputs.new('SvStringsSocket', "State")
    self.outputs.new('SvStringsSocket', "Zone")