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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 get_orga(self, orgaPk):
 """Return an organization speficied with orgaPk"""

        r = self._request('orga/' + str(orgaPk))
        if r:
            # Set base properties and copy data inside the orga
            o = Orga()
            o.pk = o.id = orgaPk
            o.__dict__.update(r.json())
            return o
        return None