'Return the sum of the two operands.
>>> ExtendedContext.add(Decimal(\'12\'), Decimal(\'7.00\'))
Decimal("19.00")
>>> ExtendedContext.add(Decimal(\'1E+2\'), Decimal(\'1.01E+4\'))
Decimal("1.02E+4")'

def add(self, a, b):

    return a.__add__(b, context=self)
