Generated Setter for boolean causes "Repetitive method name/signature..."

When I run the following (Groovy 1.5.7):

class BoolTest {
    boolean success
   
    boolean isSuccess() {
        return success ?: true
    }
   
    static void main(args) {
        def test = new BoolTest()
    }
}

I get this compilation error:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed,
D:\work\temp\BoolTest.groovy: 4: Repetitive method name/signature for method 'boolean isSuccess()' in class 'BoolTest'.
@ line 4, column 5.
boolean isSuccess() {
^
D:\work\temp\BoolTest.groovy: -1: Repetitive method name/signature for method 'boolean isSuccess()' in class 'BoolTest'.
@ line -1, column -1.
2 errors

While the following is fine:

class BoolTest {
    String success
   
    String getSuccess() {
        return success ?: ""
    }
   
    static void main(args) {
        def test = new BoolTest()
    }
}

Roshan:

I looked into the code where groovy creates getters and setters for the properties if not already provided by the user and for boolean properties, the check to see if a getter is provided is only using get<PropName>. It should check both get<PropName> and is<PropName> if the type of the property is boolean/Boolean.