def create_copy_field(self,collection,copy_dict):
        temp = {"add-copy-field":dict(copy_dict)}
        res, con_info = self.solr.transport.send_request(method='POST',endpoint=self.schema_endpoint,collection=collection, data=json.dumps(temp))
        return res
Creates a copy field. 
dataset/ETHPy150Open moonlitesolutions/SolrClient/SolrClient/schema.py/Schema.create_copy_field