code: def import_intermediate_certificate(self, certificate):
          
          self.make_request(
              CertificateImportError,
              method='create',
              resource='intermediate_certificate_import',
              headers = {'content-type': 'multipart/form-data'}, 
              files={ 
                  'signed_certificate': open(certificate, 'rb') if not \
                      pem_as_string(certificate) else certificate
              })
docs: Import a valid certificate. Certificate can be either a file path
          or a string of the certificate. If string certificate, it must include
          the -----BEGIN CERTIFICATE----- string.
          
          :param str certificate: fully qualified path or string 
          :raises CertificateImportError: failure to import cert with reason
          :raises IOError: file not found, permissions, etc.
          :return: None