def METHOD_NAME(license_pools, identifier):
    """Find and return a LicensePool object with the specified identifier.
    :param license_pools: List of LicensePool objects
    :type license_pools: List[core.model.licensing.LicensePool]
    :param identifier: Identifier to look for
    :type identifier: str
    :return: LicensePool object with the specified identifier, None otherwise
    :rtype: Optional[core.model.licensing.LicensePool]
    """
    for license_pool in license_pools:
        if license_pool.identifier.identifier == identifier:
            return license_pool
    return None