{{^is_predicate}} {{^is_unoredered}} Gets the {{#is_repeated}}`index`th {{/is_repeated}}{{doc}}{{#is_repeated}} (0-based){{/is_repeated}}{{#is_optional}}, if it exists{{/is_optional}}. {{/is_unoredered}} {{/is_predicate}} {{#is_predicate}} Holds if {{doc}}. {{/is_predicate}} {{#is_unordered}} Gets any of the {{doc_plural}}. {{/is_unordered}}