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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 model_counts_map(self, name=None, exclude=None, use_mask=False):
 """Return the model counts map for a single source, a list of sources, or for the sum of all sources in the ROI. The exclude parameter can be used to exclude one or more components when generating the model map. Parameters name : str or list of str Parameter controlling the set of sources for which the model counts map will be calculated. If name=None the model map will be generated for all sources in the ROI. exclude : str or list of str List of sources that will be excluded when calculating the model map. use_mask : bool Parameter that specifies in the model counts map should include mask pixels (i.e., ones whose weights are <= 0) Returns ------- map : `~gammapy.maps.Map` """
        
        maps = [c.model_counts_map(name, exclude, use_mask=use_mask)
                for c in self.components]
        return skymap.coadd_maps(self.geom, maps)