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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def kml_element_name(grid_coords, elem_id="KML"):
 """ Create a unique element name for KML Args: grid_coords (GridCoordinate):
 elem_id (str):
 'NL_5_42_60' """

    return "_".join(str(x) for x in [elem_id, grid_coords.zoom, grid_coords.x, grid_coords.y])