class RooAddModel: public RooResolutionModel

 Generic constructor from list of PDFs and list of coefficients.
 Each pdf list element (i) is paired with coefficient list element (i).
 The number of coefficients must be either equal to the number of PDFs,
 in which case extended MLL fitting is enabled, or be one less.

 All PDFs must inherit from RooAbsPdf. All coefficients must inherit from RooAbsReal

 Copy constructor

 Destructor

 By default the interpretation of the fraction coefficients is
 performed in the contextual choice of observables. This makes the
 shape of the p.d.f explicitly dependent on the choice of
 observables. This method instructs RooAddPdf to freeze the
 interpretation of the coefficients to be done in the given set of
 observables. If frozen, fractions are automatically transformed
 from the reference normalization set to the contextual normalization
 set by ratios of integrals

 By default the interpretation of the fraction coefficients is
 performed in the default range. This make the shape of a RooAddPdf
 explicitly dependent on the range of the observables. To allow
 a range independent definition of the fraction this function
 instructs RooAddPdf to freeze its interpretation in the given
 named range. If the current normalization range is different
 from the reference range, the appropriate fraction coefficients
 are automically calculation from the reference fractions using
 ratios if integrals

 Instantiate a clone of this resolution model representing a convolution with given
 basis function. The owners object name is incorporated in the clones name
 to avoid multiple convolution objects with the same name in complex PDF structures.

 RooAddModel will clone all the component models to create a composite convolution object

 Return code for basis function representing by 'name' string.
 The basis code of the first component model will be returned,
 if the basis is supported by all components. Otherwise 0
 is returned

 Update the coefficient values in the given cache element: calculate new remainder
 fraction, normalize fractions obtained from extended ML terms to unity and
 multiply these the various range and dimensional corrections needed in the
 current use context

 Calculate the current value

 Reset error counter to given value, limiting the number
 of future error messages for this pdf to 'resetValue'

 Check if PDF is valid for given normalization set.
 Coeffient and PDF must be non-overlapping, but pdf-coefficient
 pairs may overlap each other

 Check if this configuration was created before

 Return analytical integral defined by given scenario code

 Return the number of expected events, which is either the sum of all coefficients
 or the sum of the components extended terms

 Interface function used by test statistics to freeze choice of observables
 for interpretation of fraction coefficients

 Interface function used by test statistics to freeze choice of range
 for interpretation of fraction coefficients

 Return specialized context to efficiently generate toy events from RooAddPdfs

 Direct generation is safe if all components say so

 Return pseud-code that indicates if all components can do internal generation (1) or not (0)

 This function should never be called as RooAddModel implements a custom generator context

 Customized printing of arguments of a RooAddModel to more intuitively reflect the contents of the
 product operator construction

 Force RooRealIntegral to offer all observables for internal integration

 Model is self normalized when used as p.d.f

 Return extended mode capabilities

 Return list of component p.d.fs

 Return list of coefficients of component p.d.f.s