Example:
try {
def arr = new int[3]
arr[5] = 5
} catch(Exception ex) {
println('Catching the exception')
}
Here the parameter ex is never used in catch block.
After the quick-fix is applied:
try {
def arr = new int[3]
arr[5] = 5
} catch(Exception ignored) {
println('Catching the exception')
}