action xtrf_get_columns { label: "Returns columns defined in view." description: "Returns columns defined in view." provider: xtrf method: GET path: "/browser/views/{viewId}/columns" encoding: json input: { type: "object" properties: { viewId: { type: "integer" format: "int64" } } required: ["viewId"] additionalProperties: false } output: { type: "object" additionalProperties: true } }