loadingType [LoadingType]:
indicate that the dynamic potential field should calculate a individual
loading for each pedestrian or uses a constant loading strategy. This
will be done by the loading strategies. If the
loadingType=CONSTANT_RESPECT_TARGETS than
pedestrianSameTargetDensityWeight and pedestrianOtherTargetDensityWeight
has to be set. If loadingType=CONSTANT than pedestrianWeight has to be
set.