<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def decode_csr(self, csr):
 """Decode a CSR and return its data."""


        response = self.request(E.decodeCsrSslCertRequest(
            E.csr(csr)
        ))

        return response.data