static unsafe string Ctor(char *ptr, int index, int length)
{
var et = EETypePtr.EETypePtrOf <string>();
var start = ptr + index;
var data = StartupCodeHelpers.RhpNewArray(et.Value, length);
var s = Unsafe.As <object, string>(ref data);
fixed(char *c = &s._firstChar)
{
Platform.CopyMemory((IntPtr)c, (IntPtr)start, (ulong)length * sizeof(char));
c[length] = '\0';
}
return(s);
}