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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 deployment_dashboard(self, project_id=None):
 """ Returns the current status of each deployment environment If no project id is provided, returns all projects. """

        resource = 'deploy/dashboard/{}'.format(project_id) if project_id else 'deploy/dashboard'
        return self.get(self.resource_url(resource))