def append(self, name, data):
b_OK = True<EOL>self.snode_current.d_data[name] = self.snode_current.d_data[name] + data<EOL>return b_OK<EOL>
Append 'data' to the current node d_data

        This method appends 'data' to the current contents in the
        key named 'name'. The append assumes that the operation
        makes sense and that the data types can be appended to
        each other.