code: def mount_iso_image(self, image, image_name, ins_file_name):
          
          query_parms_str = '?image-name={}&ins-file-name={}'. \
              format(quote(image_name, safe=''), quote(ins_file_name, safe=''))
          self.manager.session.post(
              self.uri + '/operations/mount-iso-image' + query_parms_str,
              body=image)
docs: Upload an ISO image and associate it to this Partition
          using the HMC operation 'Mount ISO Image'.
  
          When the partition already has an ISO image associated,
          the newly uploaded image replaces the current one.
  
          Authorization requirements:
  
          * Object-access permission to this Partition.
          * Task permission to the "Partition Details" task.
  
          Parameters:
  
            image (:term:`byte string` or file-like object):
              The content of the ISO image.
  
              Images larger than 2GB cannot be specified as a Byte string; they
              must be specified as a file-like object.
  
              File-like objects must have opened the file in binary mode.
  
            image_name (:term:`string`): The displayable name of the image.
  
              This value must be a valid Linux file name without directories,
              must not contain blanks, and must end with '.iso' in lower case.
  
              This value will be shown in the 'boot-iso-image-name' property of
              this partition.
  
            ins_file_name (:term:`string`): The path name of the INS file within
              the file system of the ISO image.
  
              This value will be shown in the 'boot-iso-ins-file' property of
              this partition.
  
          Raises:
  
            :exc:`~zhmcclient.HTTPError`
            :exc:`~zhmcclient.ParseError`
            :exc:`~zhmcclient.AuthError`
            :exc:`~zhmcclient.ConnectionError`