c++ - How to I search for the definition of a function without a name -

i trying understand cpp program when encounter this:
has_image =(*kinfu_) (depth_device_).

i trying understand function does, without name unable search function definition.

do guys have suggestion on how should go searching of it's definition?

thanks

kinfu_ function pointer whole purpose doesn't have single possible value, multiple ones. need find place value set, , lead concrete function being executed.

you can use debugger print value of kinfu_, print out name of current function value.

kinfu_ pointer instance of class defines operator(), in case need find definition of member.