Bean Shell: class definitions not working

[angrave]

class A {};

causes
bsh.InterpreterError: Defining class problem: A: BeanShell cannot yet simultaneously define two or more dependant classes of the same name. Attempt to define: A while defining: A at bsh.BshClassManager.definingClass(BshClassManager.java:464) at bsh.ClassGenerator.generateClassImpl(ClassGenerator.java:79) at bsh.ClassGenerator.generateClass(ClassGenerator.java:29) at bsh.BSHClassDeclaration.generateClass(BSHClassDeclaration.java:97) at bsh.BSHClassDeclaration.eval(BSHClassDeclaration.java:63) at bsh.Interpreter.eval(Interpreter.java:664) at bsh.Interpreter.eval(Interpreter.java:758) at bsh.Interpreter.eval(Interpreter.java:747) at codemoo.Run.main(Run.java:17) Threw bsh.EvalError: Sourced file: inline evaluation of: class A{}; true;'' internal Error: Defining class problem: A: BeanShell cannot yet simultaneously define two or more dependant classes of the same name. Attempt to define: A while defining: A : at Line: 1 : in file: inline evaluation of:class A{}; true;'' : class A {