internal bool HasColorRule(Path path)
 {
     if (!HasColorRule())
     {
         return(false);
     }
     return(m_lineColorRuleMapper.HasDataValue(path));
 }
 internal bool HasPointColorRule(Symbol symbol)
 {
     if (!HasPointColorRule())
     {
         return(false);
     }
     return(m_pointColorRuleMapper.HasDataValue(symbol));
 }
 internal bool HasColorRule(Shape shape)
 {
     if (!HasColorRule())
     {
         return(false);
     }
     return(m_polygonColorRuleMapper.HasDataValue(shape));
 }