package Ġedu . hm . pe de map . density . strategy Ċ Ċ import Ġedu . hm . pe de map . density . Density Ċ import Ġedu . hm . pe de map . density . UT M Location Ċ Ċ interface ĠD ensity Calculation Strategy Ġ{ ĊĠĠĠ Ġfun Ġcalculate Density At ( locations : ĠList < UT M Location >, Ġlocation : ĠU TM Location ): ĠD ensity ĊĠĠĠ Ġfun Ġupdate ( locations : ĠList < UT M Location >) Ġ{} Ċ } Ċ