Function setLegendVisibility

setLegendVisibility(isVisible): void
JMap.Application.Print.setLegendVisibility

Sets the legend visible or hidden in the print layout.
Parameters
- isVisible: boolean
  true to display, false to hide
Returns void
Example
```
// Hide the legend
JMap.Application.Print.setLegendVisibility(false)

// Show the legend
JMap.Application.Print.setLegendVisibility(true)
```