def get_keyvault(access_token, subscription_id, rgname, vault_name):
endpoint = '<STR_LIT>'.join([get_rm_endpoint(),<EOL>'<STR_LIT>', subscription_id,<EOL>'<STR_LIT>', rgname,<EOL>'<STR_LIT>', vault_name,<EOL>'<STR_LIT>', KEYVAULT_API])<EOL>return do_get(endpoint, access_token)<EOL>
Gets details about the named key vault.

    Args:
        access_token (str): A valid Azure authentication token.
        subscription_id (str): Azure subscription id.
        rgname (str): Azure resource group name.
        vault_name (str): Name of the key vault.

    Returns:
        HTTP response. JSON body of key vault properties.