# Source code for openpyxl.drawing.relation

    # Copyright (c) 2010-2024 openpyxl

    from openpyxl.xml.constants import CHART_NS

    from openpyxl.descriptors.serialisable import Serialisable
    from openpyxl.descriptors.excel import Relation

    class ChartRelation(Serialisable):

        tagname = "chart"
        namespace = CHART_NS

        id = Relation()

        def __init__(self, id):
            self.id = id