"description":"Whether specified concrete indices should be ignored when unavailable (missing or closed)"
},
"allow_no_indices":{
"type":"boolean",
"description":"Whether to ignore if a wildcard indices expression resolves into no concrete indices. (This includes `_all` string or when no indices have been specified)"
},
"expand_wildcards":{
"type":"enum",
"options":["open","closed"],
"default":"open",
"description":"Whether to expand wildcard expression to concrete indices that are open, closed or both."