public void CopyFrom(StyleDataRef <T> other)
 {
     if (m_Ref.refCount == 1)
     {
         m_Ref.value.CopyFrom(ref other.m_Ref.value);
     }
     else
     {
         m_Ref.Release();
         m_Ref = other.m_Ref;
         m_Ref.Acquire();
     }
 }
 public bool Equals(StyleDataRef <T> other)
 {
     return(other == this);
 }