pdate the melt rate in this example. Here, TYPE is the name of the structure we just made (e.g. <code>update_melt_rate!(melt_rate::MISMIPMeltRateOne, fields, grid)</code>).</p><p>Note that the arguments of this function must be as mentioned here, so that the multiple dispatch capability of julia can be leveraged!  Effectively, what we&#39;re doing is defining another method (think: function) named <code>update_melt_rate!</code>, which sets the melt rate according to this function when the input melt rate is