Extensible select and enumeration types

and their elements in schema Analytical_model_arm taking into account BASED_ON types


 activity_method_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Test_method_based_parameter_assignment

 analytical_model_port_assignment_select - EXTENSIBLE GENERIC_ENTITY SELECT

 assigned_name_select - EXTENSIBLE GENERIC_ENTITY SELECT
          External_class_library

 classification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          classified_element_select

 classified_element_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Product
          Product_version
          Product_view_definition

 documented_element_select - EXTENSIBLE SELECT
          Analytical_model_definition
          Model_parameter
          Property_value_representation

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Digital_analytical_model_vector_port
          Document_definition
          File
          User_defined_library_or_dictionary

 groupable_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Group_relationship

 identification_item - EXTENSIBLE SELECT

 measure_value - EXTENSIBLE SELECT
          any_number_value
          any_string_value
          length_measure
          plane_angle_measure

 organization_or_person_in_organization_item - EXTENSIBLE SELECT

 property_assignment_select - EXTENSIBLE SELECT
          Analytical_model_definition

 represented_definition - EXTENSIBLE SELECT
          Assigned_property
          Independent_property