private RuntimeFunction EnsureHomedMethod(EcmaValue value, RuntimeObject target, int requiredLength, string notFunctionError, string incorrectLengthError)
{
Guard.ArgumentIsCallable(value, notFunctionError);
RuntimeFunction fn = value.GetUnderlyingObject <RuntimeFunction>();
if (fn[WellKnownProperty.Length] != requiredLength)
{
throw new EcmaSyntaxErrorException(incorrectLengthError);
}
return(fn.AsHomedMethodOf(target));
}