thrownewTypeError('An element descriptor\'s .kind property must be either "method" or'+' "field", but a decorator created an element descriptor with'+' .kind "'+kind+'"');
thrownewTypeError('An element descriptor\'s .placement property must be one of "static",'+' "prototype" or "own", but a decorator created an element descriptor'+' with .placement "'+placement+'"');
}
vardescriptor=elementObject.descriptor;
this.disallowProperty(elementObject,"elements","An element descriptor");