create
Creates a swatch image with the template's thumbnail or symbology from the specified layer. In the absence of a thumbnail for this template, the symbology from the specified layer is used to determine a swatch image, provided this layer is loaded and is one of the SharedTemplate.layerIds.
Return
A Result containing a visual representation of this template.
Since
300.0.0
Parameters
layer
An ID that identifies the layer for which a swatch image is requested.