class RooNumConvolution: public RooAbsReal

 Constructor of convolution operator PDF

 convVar  :  convolution variable (on which both pdf and resmodel should depend)
 pdf      :  input 'physics' pdf
 resmodel :  input 'resultion' pdf

 output is pdf(x) (X) resmodel(x) = Int [ pdf(x') resmodel (x-x') ] dx'

 Copy constructor

 Initialization function -- create clone of convVar (x') and deep-copy clones of pdf and
 model that are connected to x' rather than x (convVar)

 Destructor

 Calculate convolution integral

 Intercept server redirects. Throw away cache, as figuring out redirections on the cache is an unsolvable problem.

 Removes previously defined convolution window, reverting to convolution from -inf to +inf

 Restrict convolution integral to finite range [ x - C - S*W, x - C + S*W ]
 where x is current value of convolution variablem, C = centerParam, W=widthParam and S = widthScaleFactor
 Inputs centerParam and withParam can be function expressions (RooAbsReal, RooFormulaVar) etc.

 Activate warning messages if number of function calls needed for evaluation of convolution integral
 exceeds given threshold

 Activate call profile if flag is set to true. A 2-D histogram is kept that stores the required number
 of function calls versus the value of x, the convolution variable

 All clones of RooNumConvolution objects will keep logging to the histogram of the original class
 so that performance of temporary object clones, such as used in e.g. fitting, plotting and generating
 are all logged in a single place.

 Function caller should take ownership of profiling histogram as it is not deleted at the RooNumConvolution dtor

 Calling this function with flag set to false will deactivate call profiling and delete the profiling histogram

 Hook function to intercept printCompactTree() calls so that it can print out
 the content of its private cache in the print sequence

 Access components