{ "namespace": "string", "type_name": "is_alpha", "description": "Checks whether the input string contains only alpha characters", "components": [ { "namespace": "string", "type_name": "string_bool_operation" } ], "properties": [ ], "extensions": [ { "namespace": "metadata", "type_name": "dublin-core", "extension": { "title": "Is Alpha", "subject": "Checks whether the input string contains only alpha characters", "creator": "Hanack" } } ] }