def buildChildren(self, child_, node, nodeName_, fromsubclass_=False):
        if nodeName_ == 'Existing_File_Name':
            Existing_File_Name_ = child_.text
            Existing_File_Name_ = self.gds_validate_string(Existing_File_Name_, node, 'Existing_File_Name')
            self.Existing_File_Name = Existing_File_Name_