Bug report: can't overcome Java method ambiguity in some clear cases

[Tal Liron]

Here's a particular exception I got:

java.lang.NoSuchMethodException: Can't unambiguously select between 
fixed arity signatures [(java.lang.String, java.lang.String), (int, 
java.lang.Object)] of the method org.restlet.util.Series.set for 
argument types [java.lang.String, java.lang.Integer]
     at 
jdk.internal.dynalink.beans.OverloadedMethod.throwAmbiguousMethod(OverloadedMethod.java:222)
     at 
jdk.nashorn.internal.scripts.Script$http.runScript(component/clients/http.js:12)
     at 
jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:527)
     at 
jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:204)
     at 
jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:367)
     at 
com.threecrickets.scripturian.adapter.NashornProgram.execute(NashornProgram.java:83)
     at 
com.threecrickets.scripturian.Executable.execute(Executable.java:838)
     at 
com.threecrickets.scripturian.service.DocumentService.execute(DocumentService.java:154)
     at 
jdk.nashorn.internal.scripts.Script$container._L28$_L63(sincerity/container.js:72)
     at 
jdk.nashorn.internal.scripts.Script$container._L28$_L82(sincerity/container.js:108)
     at 
jdk.nashorn.internal.scripts.Script$default.runScript(component/default.js:57)
     at 
jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:527)
     at 
jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:204)
     at 
jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:367)

However, it seems rather clear that the first signature is suitable, 
with the second argument to be coerced into a string. (This works 
correctly in Rhino.)