def list_entity_types(namespace, workspace):
headers = _fiss_agent_header({"<STR_LIT>":  "<STR_LIT:application/json>"})<EOL>uri = "<STR_LIT>".format(namespace, workspace)<EOL>return __get(uri, headers=headers)<EOL>
List the entity types present in a workspace.

    Args:
        namespace (str): project to which workspace belongs
        workspace (str): Workspace name

    Swagger:
        https://api.firecloud.org/#!/Entities/getEntityTypes