code: def custom_licenses(self):
          
          buf = (ctypes.c_char * self.MAX_BUF_SIZE)()
          result = self._dll.JLINK_EMU_GetLicenses(buf, self.MAX_BUF_SIZE)
          if result < 0:
              raise errors.JLinkException(result)
          return ctypes.string_at(buf).decode()
docs: Returns a string of the installed licenses the J-Link has.
  
          Args:
            self (JLink): the ``JLink`` instance
  
          Returns:
            String of the contents of the custom licenses the J-Link has.