get calls to methods/functions from a source code extent, with libclang.

Hello,

These are two sample lines of C++ code:

helSum[0] = antUsrPtr->antennaFunction(y12ant,y23ant,mu1ant,mu2ant,mu3ant, //$
9,9,9,9,9);

The first line has a special-format comment ‘//$’ that indicates to me that in that code line there is a relevant call: antennaFunction( , , , , , , , , …). I want to pick it up usign libclang (the node / cursor of that precise call). This is the task!