class-member access-modifiers

i wish slight class: "one" ("accessiblewithinsamenamespace") permitted class: "two", but carrying "two" fluctuating "one".

both classes same namespace, i'm pondering maybe there's an access-modifier emulates "protected" modifyer, nonetheless namespaces.

some code:

namespace test
{
    category one
    {
        open vacant accessibletoall()
        {
        }


        stable vacant accessiblewithinsamenamespace()
        {
            // i am public

            // i accessed classes
            // within same namespace class
        }
    }
}

namespace test
{
    category two
    {
        open two()
        {
            one = new one();

            // i am means opening slight since class
            // same namespace class: "one"
            one.accessiblewithinsamenamespace();
        }
    }
}