The default implementation of Locate(S2Point). It is instantiated by
each subtype in order to (1) minimize the number of virtual method
calls (since subtypes are typically "final") and (2) ensure that the
correct versions of non-virtual methods such as cell() are called.
The default implementation of Locate(S2Point). It is instantiated by each subtype in order to (1) minimize the number of virtual method calls (since subtypes are typically "final") and (2) ensure that the correct versions of non-virtual methods such as cell() are called.