'Describes the resource-based policies controlling access to
the services in this search domain.
:type domain_name: string
:param domain_name: A string that represents the name of a
domain. Domain names must be unique across the domains
owned by an account within an AWS region. Domain names
must start with a letter or number and can contain the
following characters: a-z (lowercase), 0-9, and -
(hyphen). Uppercase letters and underscores are not
allowed.
:raises: BaseException, InternalException, ResourceNotFoundException'

def describe_service_access_policies(self, domain_name):

    doc_path = ('describe_service_access_policies_response', 'describe_service_access_policies_result', 'access_policies')
    params = {'DomainName': domain_name}
    return self.get_response(doc_path, 'DescribeServiceAccessPolicies', params, verb='POST')
