Allows you to interrogate the properties of a sublayer within an annotation layer and to change the visibility of the sublayer. You can get a ListImpl of AnnotationSublayer from AnnotationLayer using LayerContent.subLayerContents. AnnotationSublayer objects only exist as part of an AnnotationLayer object, populated when the AnnotationLayer is loaded. They cannot exist separately. Annotation sublayers offer finer control over your annotation, allowing the author to set different visual properties from the parent annotation layer. These visual properties include font, size, color, or different minimum and maximum scale ranges.
The where-clause of the sql expression that defines which annotation features from the feature table are selected into this sublayer. The definition expression string uses the SQL-92 where clause syntax (https://en.wikipedia.org/wiki/SQL-92). Be sure to escape special characters in the expression string as required for your platform. The DATE keyword expects the date format yyyy-mm-dd and the TIMESTAMP keyword expects the time stamp format yyyy-mm-dd hh:mm:ss. See the ArcGIS Blog article entitled "Querying Feature Services Date-Time Queries" (https://www.esri.com/arcgis-blog/products/api-rest/data-management/querying-feature-services-date-time-queries/) for more information.
Returns the layer content's effective visibility at the specified scale. Returns the effective layer content visibility. This effective visibility takes care of the effective visibility of the parents at the specified scale. Will return false if an error occurs.