'Fetch the human readable name of a specified configuration option.
:param string full_field_name: the full name of the field, structured as follows:
model_name.field_name (e.g.: "sale.config.settings.fetchmail_lead")
:return string: human readable name of the field (e.g.: "Create leads from incoming mails")'

@api.model
def get_option_name(self, full_field_name):

    (model_name, field_name) = full_field_name.rsplit('.', 1)
    return self.env[model_name].fields_get([field_name])[field_name]['string']
