获取逻辑值val在映射属性mapProperty上的映射属性值 @param val 逻辑数据值 @param mapProperty 映射属性,目前仅支持三种属性: Consts.LEGEND_P_FILLCOLOR: 填充颜色 Consts.LEGEND_P_LINECOLOR: 边框或者折线颜色 Consts.LEGEND_P_MARKERSTYLE: 点风格
(Object val, byte mapProperty)
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nothing calls this directly
no test coverage detected