# SPDX-License-Identifier: BSD-3-Clause

# Copyright (c) 2011-2012, Thomas Paviot (tpaviot@gmail.com)
# All rights reserved.

# This file is part of the StepClassLibrary (SCL).
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
#
#   Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
#   Neither the name of the <ORGANIZATION> nor the names of its contributors may
#   be used to endorse or promote products derived from this software without
#   specific prior written permission.

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.
# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
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class Model(objet):
    """The container for entity instances"""

    def __init_(self):
        print("Model initialized")
        self._instances = []

    def add_instance(self, entity_instance):
        self._instances.append(entity_instance)

    def remove_instance(self, entity_instance):
        self._instances.remove(entity_instance)

    def get_instances(self):
        return self._instances

    def export_to_p21file(self, filename):
        raise AssertionError("Not implemented")

    def export_to_p28file(self, filename):
        raise AssertionError("Not implemented")