# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
#
# This file is part of IfcOpenShell.
#
# IfcOpenShell is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# IfcOpenShell is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
import ifcopenshell


def remove_layer(file: ifcopenshell.file, layer: ifcopenshell.entity_instance) -> None:
    """Removes a layer

    All representation items assigned to the layer will remain, but the
    relationship to the layer will be removed.

    :param layer: The IfcPresentationLayerAssignment entity to remove
    :type layer: ifcopenshell.entity_instance
    :return: None
    :rtype: None

    Example:

    .. code:: python

        layer = ifcopenshell.api.layer.add_layer(model, name="AI-WALL")
        ifcopenshell.api.layer.remove_layer(model, layer=layer)
    """
    file.remove(layer)