def METHOD_NAME(self, rptfile):
    """
    This function tests version strings for validity
    Both missing and old CVS style version numbers will be reported into file rptfile.
    """
    testval = self.tm.isvalidversion(self.original.version)
    if testval == -1:
        rptfile.write(str("File " + self.original.fullfilename + " contains NO version number!\n"))
    elif testval == 0:
        rptfile.write(str("File " + self.original.fullfilename + " contains old CVS version number " + self.original.version + "!\n"))
    for actfile in self.translations:
        testval = self.tm.isvalidversion(actfile.version)
        if testval == -1:
            rptfile.write(str("File " + actfile.fullfilename +" contains NO version number!\n"))
        elif testval == 0:
            rptfile.write(str("File " + actfile.fullfilename +" contains old CVS version number " + actfile.version + "!\n"))